The document discusses M-Disc, a new type of optical disc material that is much more durable than traditional discs like DVDs and Blu-rays. M-Disc uses a material with properties "similar to rock" rather than polycarbonate, making the discs highly resistant to scratches, fingerprints, heat, and UV light damage. The discs are expected to maintain data integrity for 1000 years, far surpassing normal discs. M-Discs can still be read by existing DVD and Blu-ray drives due to backward compatibility, but require a more powerful laser for writing. The discs cost around $3 each and have a storage capacity similar to DVDs currently, with plans to increase capacity to match Blu-rays.