The 'Science Based Targets Initiative' calls on companies to publicly commit to science-based greenhouse gas reduction targets, aiming to involve 100 companies by 2015 and 250 by 2020. The process includes announcing a target, submitting it for quality review, and committing to specific criteria regarding emissions, with a minimum commitment period of 5 years. Additional guidance encourages companies to develop both mid- and long-term goals, incorporate scope 3 emissions if significant, and promotes transparency in target-setting and reporting.