Contrary to belief, older people in South Africa and Brazil become happier as they age. New research suggests that, with the right policies in place, a developing country can significantly improve the wellbeing of its older citizens.
Sea squirts might not look like much...they're simple, hermaphroditic creatures that barely even have a brain. But they have a particular knack for activating the enzyme telomerase, which protects DNA from degradation. That unexpected talent could help fight human aging.