The Download: A bid to treat blindness, and bridging the internet divide

Plus: TikTok won't be heading to court this week The first human test of a rejuvenation method will begin "shortly" Life Biosciences, a small Boston startup founded by Harvard professor and life-extension evangelist David Sinclair, has won FDA approval to proceed with the first targeted attempt at age reversal in human volunteers. The company plans to try to treat eye disease with a radical rejuvenation concept called "reprogramming" that has recently attracted hundreds of millions in investment for Silicon Valley firms like Altos Labs, New Limit, and Retro Biosciences, backed by many of the biggest names in tech. Today, an estimated 2.2 billion people still have either limited or no access to the internet, largely because they live in remote places. But that number could drop this year, thanks to tests of stratospheric airships, uncrewed aircraft, and other high-altitude platforms for internet delivery. Although Google shuttered its high-profile internet balloon project Loon in 2021, work on other kinds of high-altitude platform stations has continued behind the scenes. Now, several companies claim they have solved Loon's problems--and are getting ready to prove the tech's internet beaming potential starting this year.