How do you define “nature?” If we define it as that which is untouched by humans, then we won’t have any left, says environmental writer Emma Marris. She urges us to consider a new definition of nature — one that includes not only pristine wilderness but also the untended patches of plants growing in urban spaces — and encourages us to bring our children out to touch and tinker with it, so that one day they might love and protect it.
The new iPhone is slimmer and faster than ever. But like most new generations of smartphones, its battery has pretty much stayed the same over the years. Short of carrying an external battery all the time, is there any way to extend the life of your smartphone battery? In the latest Reactions episode, we explain the chemistry of lithium-ion batteries, why they occasionally explode, and share some tips to get the most from that smartphone battery.