Levels of herd immunity within the UK may already be high enough to prevent a second wave of coronavirus, a new study by Oxford University scientists suggests. The researchers posit that some of the

Forests don't have to be far-flung nature reserves, isolated from human life. Instead, we can grow them right where we are -- even in cities. Eco-entrepreneur and TED Fellow Shubhendu Sharma grows ultra-dense, biodiverse mini-forests of native species in…