Our planet is getting hotter and drier. Drinking water is in short supply, but there are two largely untapped sources: the ocean and sewage. To get a taste of what might be in store for our faucets and understand the pros and cons, journalist Amanda Little goes to California.

All medical technology carries a price. For implantable defibrillators — which are designed to deliver peace of mind — one of the biggest downsides is fear, says cardiologist Sandeep Jauhar. For patients, the question remains: What are you willing to give up to live a little longer?

US authorities recovered an illegally looted mummy, and they wanted to return it. Big problem: They didn’t know where it was from. Enter Sarah Parcak, an Egyptologist and expert in the relatively new field of space archaeology. Here, she explains how she and a team unravelled the mystery.

For decades, research into drugs like LSD, MDMA and psilocybin was banned. Now it’s time to shed our old fears and fully investigate their potential for treatments that could benefit people with PTSD, depression, substance abuse, and more, says psychedelics expert Rick Doblin.

Emerging research suggests that retirement could lead to a decline in your cognitive function, says gerontologist Ross Andel. Anyone who’s retired or thinking about retirement should read this to learn more.

You don’t need to go to a national park to help your kids fall in love with nature; a walk around the block can be enough. Tech also doesn’t have to be the enemy. Instead, use it as a tool to enhance their awe, says science communicator Scott Sampson.

Too many of us, too often, think of pain as something that needs to be eliminated, at any cost. But we — doctors, patients, drug makers, and all of us — can be part of a much-needed shift that questions this attitude, says bioethicist Travis Rieder.