The surprising solution to ocean plastic | David Katz

3 thoughtful ways to conserve water | Lana Mazahreh

How record collectors find lost music and preserve our cultural heritage | Alexis Charpentier

Mammoths resurrected, geoengineering and other thoughts from a futurist | Stewart Brand and Chris Anderson

How to put the power of law in people's hands | Vivek Maru

Our treatment of HIV has advanced. Why hasn't the stigma changed? | Arik Hartmann

The hidden role informal caregivers play in health care | Scott Williams

Talk about your death while you're still healthy | Michelle Knox

The search for "aha!" moments | Matt Goldman

What's it like to be a robot? | Leila Takayama