Carbon credits represent the right to emit one tonne of carbon dioxide. The goal is to allow market mechanisms to drive industrial processes towards lower emissions. Global warming is caused by greenhouse gases that trap heat in the atmosphere and cause weather changes like rising sea levels and shifts in crop growing regions. The top emitters of carbon dioxide are China, the United States, the European Union, Brazil, Indonesia, and Russia. China emits more carbon dioxide than the next two countries combined and its emissions continue to rise rapidly due to its large coal consumption.
Professor Sir David King at the Bristol Festival Of IdeasJames Barlow
A talk given by Professor Sir David King - former Chief Scientific Adviser to the UK Government - at the Bristol Festival of Ideas, relating to his book "The Hot Topic"
Professor Sir David King at the Bristol Festival Of IdeasJames Barlow
A talk given by Professor Sir David King - former Chief Scientific Adviser to the UK Government - at the Bristol Festival of Ideas, relating to his book "The Hot Topic"
My presentation at the "Third Annual Conference of the Transatlantic University Collaboration for Climate and Energy Law" on 28 April 2021 in Oslo https://www.jus.uio.no/nifs/english/research/events/2021/04-28-tucccel.html
"" is an initiative undertaken by the members of the French Nuclear Energy Society (SFEN), the American Nuclear Society (ANS) and the European Nuclear Society (ENS). It brings together nuclear scientists from all parts of the globe, through the representation of 60 regional and national nuclear associations.
Presentation by Michael Jacobs at the STEPS Centre Summer School, June 2013.
http://steps-centre.org/about/steps-summer-school/
Video here: http://www.youtube.com/watch?v=zqzcHzX6K8w
A hard-hitting lecture by Ranyl Rhydwen at the Centre for Alternative Technology in Wales - really 3 lectures crammed into one - explaining how our climate works, what the current science is saying about climate change, and thoughts on what to do about it. A very good, and important talk to listen to. Recorded November 2009, a month before the COP-15 Climate Conference in Copenhagen. Please note this lecture is copyright Centre for Alternative Technology (http://www.cat.org.uk)
Carbon per Capita 5 Facts You Need To Know (infographic)Little Climate
Climate change is such a broad and complex issue – many of us struggle to connect the dots to what we do on a daily basis. But, there’s a simple number that gets us to a good start – our carbon dioxide emissions per person (or carbon per capita). Learn about carbon per capita, the difference between Production and Consumption carbon approaches, explore the case study of how Sweden has rapidly decarbonized, and consider the moral issues of the widening climate inequality and future carbon convergence.
My presentation at the "Third Annual Conference of the Transatlantic University Collaboration for Climate and Energy Law" on 28 April 2021 in Oslo https://www.jus.uio.no/nifs/english/research/events/2021/04-28-tucccel.html
"" is an initiative undertaken by the members of the French Nuclear Energy Society (SFEN), the American Nuclear Society (ANS) and the European Nuclear Society (ENS). It brings together nuclear scientists from all parts of the globe, through the representation of 60 regional and national nuclear associations.
Presentation by Michael Jacobs at the STEPS Centre Summer School, June 2013.
http://steps-centre.org/about/steps-summer-school/
Video here: http://www.youtube.com/watch?v=zqzcHzX6K8w
A hard-hitting lecture by Ranyl Rhydwen at the Centre for Alternative Technology in Wales - really 3 lectures crammed into one - explaining how our climate works, what the current science is saying about climate change, and thoughts on what to do about it. A very good, and important talk to listen to. Recorded November 2009, a month before the COP-15 Climate Conference in Copenhagen. Please note this lecture is copyright Centre for Alternative Technology (http://www.cat.org.uk)
Carbon per Capita 5 Facts You Need To Know (infographic)Little Climate
Climate change is such a broad and complex issue – many of us struggle to connect the dots to what we do on a daily basis. But, there’s a simple number that gets us to a good start – our carbon dioxide emissions per person (or carbon per capita). Learn about carbon per capita, the difference between Production and Consumption carbon approaches, explore the case study of how Sweden has rapidly decarbonized, and consider the moral issues of the widening climate inequality and future carbon convergence.
The desire to understand and shape the processes that sustain economic progress and competitiveness in a market economy has driven much of the research into innovation and technological change. It is, nevertheless, critical to maintain sustainability and strike a balance between technology and the environment.
An easy way to get started with git. I use these slides with my talk highlighting why we need git, a small command list to follow, and some more trivia and a ton of useful links.
Observation of Io’s Resurfacing via Plume Deposition Using Ground-based Adapt...Sérgio Sacani
Since volcanic activity was first discovered on Io from Voyager images in 1979, changes
on Io’s surface have been monitored from both spacecraft and ground-based telescopes.
Here, we present the highest spatial resolution images of Io ever obtained from a groundbased telescope. These images, acquired by the SHARK-VIS instrument on the Large
Binocular Telescope, show evidence of a major resurfacing event on Io’s trailing hemisphere. When compared to the most recent spacecraft images, the SHARK-VIS images
show that a plume deposit from a powerful eruption at Pillan Patera has covered part
of the long-lived Pele plume deposit. Although this type of resurfacing event may be common on Io, few have been detected due to the rarity of spacecraft visits and the previously low spatial resolution available from Earth-based telescopes. The SHARK-VIS instrument ushers in a new era of high resolution imaging of Io’s surface using adaptive
optics at visible wavelengths.
Introduction:
RNA interference (RNAi) or Post-Transcriptional Gene Silencing (PTGS) is an important biological process for modulating eukaryotic gene expression.
It is highly conserved process of posttranscriptional gene silencing by which double stranded RNA (dsRNA) causes sequence-specific degradation of mRNA sequences.
dsRNA-induced gene silencing (RNAi) is reported in a wide range of eukaryotes ranging from worms, insects, mammals and plants.
This process mediates resistance to both endogenous parasitic and exogenous pathogenic nucleic acids, and regulates the expression of protein-coding genes.
What are small ncRNAs?
micro RNA (miRNA)
short interfering RNA (siRNA)
Properties of small non-coding RNA:
Involved in silencing mRNA transcripts.
Called “small” because they are usually only about 21-24 nucleotides long.
Synthesized by first cutting up longer precursor sequences (like the 61nt one that Lee discovered).
Silence an mRNA by base pairing with some sequence on the mRNA.
Discovery of siRNA?
The first small RNA:
In 1993 Rosalind Lee (Victor Ambros lab) was studying a non- coding gene in C. elegans, lin-4, that was involved in silencing of another gene, lin-14, at the appropriate time in the
development of the worm C. elegans.
Two small transcripts of lin-4 (22nt and 61nt) were found to be complementary to a sequence in the 3' UTR of lin-14.
Because lin-4 encoded no protein, she deduced that it must be these transcripts that are causing the silencing by RNA-RNA interactions.
Types of RNAi ( non coding RNA)
MiRNA
Length (23-25 nt)
Trans acting
Binds with target MRNA in mismatch
Translation inhibition
Si RNA
Length 21 nt.
Cis acting
Bind with target Mrna in perfect complementary sequence
Piwi-RNA
Length ; 25 to 36 nt.
Expressed in Germ Cells
Regulates trnasposomes activity
MECHANISM OF RNAI:
First the double-stranded RNA teams up with a protein complex named Dicer, which cuts the long RNA into short pieces.
Then another protein complex called RISC (RNA-induced silencing complex) discards one of the two RNA strands.
The RISC-docked, single-stranded RNA then pairs with the homologous mRNA and destroys it.
THE RISC COMPLEX:
RISC is large(>500kD) RNA multi- protein Binding complex which triggers MRNA degradation in response to MRNA
Unwinding of double stranded Si RNA by ATP independent Helicase
Active component of RISC is Ago proteins( ENDONUCLEASE) which cleave target MRNA.
DICER: endonuclease (RNase Family III)
Argonaute: Central Component of the RNA-Induced Silencing Complex (RISC)
One strand of the dsRNA produced by Dicer is retained in the RISC complex in association with Argonaute
ARGONAUTE PROTEIN :
1.PAZ(PIWI/Argonaute/ Zwille)- Recognition of target MRNA
2.PIWI (p-element induced wimpy Testis)- breaks Phosphodiester bond of mRNA.)RNAse H activity.
MiRNA:
The Double-stranded RNAs are naturally produced in eukaryotic cells during development, and they have a key role in regulating gene expression .
A brief information about the SCOP protein database used in bioinformatics.
The Structural Classification of Proteins (SCOP) database is a comprehensive and authoritative resource for the structural and evolutionary relationships of proteins. It provides a detailed and curated classification of protein structures, grouping them into families, superfamilies, and folds based on their structural and sequence similarities.
THE IMPORTANCE OF MARTIAN ATMOSPHERE SAMPLE RETURN.Sérgio Sacani
The return of a sample of near-surface atmosphere from Mars would facilitate answers to several first-order science questions surrounding the formation and evolution of the planet. One of the important aspects of terrestrial planet formation in general is the role that primary atmospheres played in influencing the chemistry and structure of the planets and their antecedents. Studies of the martian atmosphere can be used to investigate the role of a primary atmosphere in its history. Atmosphere samples would also inform our understanding of the near-surface chemistry of the planet, and ultimately the prospects for life. High-precision isotopic analyses of constituent gases are needed to address these questions, requiring that the analyses are made on returned samples rather than in situ.
Earliest Galaxies in the JADES Origins Field: Luminosity Function and Cosmic ...Sérgio Sacani
We characterize the earliest galaxy population in the JADES Origins Field (JOF), the deepest
imaging field observed with JWST. We make use of the ancillary Hubble optical images (5 filters
spanning 0.4−0.9µm) and novel JWST images with 14 filters spanning 0.8−5µm, including 7 mediumband filters, and reaching total exposure times of up to 46 hours per filter. We combine all our data
at > 2.3µm to construct an ultradeep image, reaching as deep as ≈ 31.4 AB mag in the stack and
30.3-31.0 AB mag (5σ, r = 0.1” circular aperture) in individual filters. We measure photometric
redshifts and use robust selection criteria to identify a sample of eight galaxy candidates at redshifts
z = 11.5 − 15. These objects show compact half-light radii of R1/2 ∼ 50 − 200pc, stellar masses of
M⋆ ∼ 107−108M⊙, and star-formation rates of SFR ∼ 0.1−1 M⊙ yr−1
. Our search finds no candidates
at 15 < z < 20, placing upper limits at these redshifts. We develop a forward modeling approach to
infer the properties of the evolving luminosity function without binning in redshift or luminosity that
marginalizes over the photometric redshift uncertainty of our candidate galaxies and incorporates the
impact of non-detections. We find a z = 12 luminosity function in good agreement with prior results,
and that the luminosity function normalization and UV luminosity density decline by a factor of ∼ 2.5
from z = 12 to z = 14. We discuss the possible implications of our results in the context of theoretical
models for evolution of the dark matter halo mass function.
Richard's aventures in two entangled wonderlandsRichard Gill
Since the loophole-free Bell experiments of 2020 and the Nobel prizes in physics of 2022, critics of Bell's work have retreated to the fortress of super-determinism. Now, super-determinism is a derogatory word - it just means "determinism". Palmer, Hance and Hossenfelder argue that quantum mechanics and determinism are not incompatible, using a sophisticated mathematical construction based on a subtle thinning of allowed states and measurements in quantum mechanics, such that what is left appears to make Bell's argument fail, without altering the empirical predictions of quantum mechanics. I think however that it is a smoke screen, and the slogan "lost in math" comes to my mind. I will discuss some other recent disproofs of Bell's theorem using the language of causality based on causal graphs. Causal thinking is also central to law and justice. I will mention surprising connections to my work on serial killer nurse cases, in particular the Dutch case of Lucia de Berk and the current UK case of Lucy Letby.
What is greenhouse gasses and how many gasses are there to affect the Earth.moosaasad1975
What are greenhouse gasses how they affect the earth and its environment what is the future of the environment and earth how the weather and the climate effects.
What is greenhouse gasses and how many gasses are there to affect the Earth.
Greenhouse Effect and Global Carbon Footprint
1.
2.
3. A carbon credit is a term for
any tradable certificate
representing the right to emit
one tonne of carbon dioxide.
One carbon credit is equal to
one metric tonne of CO2,
The goal is to allow market
mechanisms to drive industrial
and commercial processes in
the direction of low emissions
those used when there is no
cost to emitting CO2.
4. To calculate your
housing footprint you
need to work out your
personal share of
home energy use,
water use and waste
disposal.
This means collecting
figures for your home’s
annual energy, water
and waste use and
dividing it by the
number of people in
your home, to get your
individual share.
5. A GreenHouse Gas is a gas that both absorbs and emits
radiation called thermal radiation or heat.When
present in the atmosphere, these gases trap heat, cause
a warming process called the GLOBALWARMING.
10. With heat trapped on Earth means
the weather over Earth will change.
Sea levels will rise due to melting
of polar icecaps
The changes in the weather will
affect the types of crops grown in
different parts of the world.
Countries whose coastal regions
have a large population, such as
Egypt and China, may see whole
populations move inland to avoid
flood risk areas.
11.
12. Rank Country
CO2 emissions in
megatonnes
Percentage of
global total
1 CHINA 7,225.4 16.38%
2
UNITED STATES OF
AMERICA
6,933.8 15.72%
3 European Union 5,331.5 12.09%
4 Brazil 2,854.8 6.47%
5 Indonesia 2,038.9 4.62%
6 Russian Federation 2,012.8 4.56%
7 INDIA 1,875.5 4.25%
8 JAPAN 1,390.3 3.15%
9 Germany 1,005.0 2.28%
10 Canada 810.8 1.84%
13.
14. Americans consume 40% more energy per
person compared to the world average.Thus
that means they would produce more CO2
and that leads to greenhouse effect.
United States
8.35TOE/person
In 2012, U.S. greenhouse gas emissions totaled 6,526 million metric tons CO2
U.S. emissions decreased by 3.4 percent from 2011 to 2012.
Carbon dioxide (CO2) is the primary greenhouse
gas emitted through human activities. In 2012,
CO2 accounted for about 82% of all U.S.
greenhouse gas emissions from human
activities.
15.
16. China is the largest contributor of
GHG in the whole world
By 2015, China will emit nearly 50
percent more greenhouse gases than
the United States
China's overall energy use has
skyrocketed along with its growth,
keeping renewable sources just a
sliver of the country's overall share.
MeanwhileChina's emissions, which
were 20 percent higher than the
United States' in 2010, could be as
high as 49 percent more by 2015.
17. China, the world's largest producer of carbon
dioxide, is directly feeling the man-made heat of
global warming.
China emits more of the greenhouse gas than the
next two biggest carbon polluters — the U.S. and
India — combined. And its emissions keep
soaring by about 10 percent per year.
China is the world's biggest producer and
consumer of coal, which is the largest source of
man-made carbon dioxide emissions.
About 90 percent of the temperature rise seen by
the researchers could be traced directly to man-
made greenhouse gases,
18. Japan’s greenhouse gas emissions rose 3.9% by
increased use of fossil fuels in power plants after
the Fukushima nuclear disaster.
Japan has warned that it will fall far short of the
greenhouse gas reduction target it set itself four
years ago.
Under the most extreme scenario, Japan said its
emissions would increase slightly rather than fall
25% as promised in 2009.
19. Excluding so-called carbon credits that can be used to offset
greenhouse gas output, emissions increased to 1.307 billion metric
tons in the 12 months or 3.6% higher than 1990 levels.
Steps to Prevent Emissions
Actions include reducing emissions of CO2, due to energy
consumption, and other greenhouse gases at business sites (our
factories and offices), and reducing emissions associated with
transportation.
20.
21. India is a very Populous country thus this
results in increasing of GHG.
India is the 9th largest country for emissions of
CO2.
It needs to look on the developed countries like
Japan and using advanced technology to
reduce its global footprint
India should use more Green electricity and
use more and more of the Renewable sources
of energy.
Which will help in reducing CO2 levels