On Timothy Treadwell, who lived and died with the bears of Alaska.

It’s legal to buy poppy seeds in America and it’s legal to plant them—unless you’re familiar with the simple process of turning them into opium, that is. Then having poppies in your garden is a felony.

For those who suffer from environmental illnesses, the town of Snowflake is an escape from a modern world full of allergens: fragrances, gluten, wifi.

A physiological theory of mental illness.

How our efforts to illuminate the nighttime are dangerous to Earth’s biodiversity.

The author investigates the massive wildlife die-off in the Salton Sea by rafting from its tributaries in Mexico.

Lee Berger is unquestionably a paleoanthropologist. But is he a visionary or a hype artist?

A study of the Mississippi River, its history, and efforts by the U.S. Army Corps of Engineers to hold it in place.

“The crisis in Flint isn’t over. It’s everywhere.”

The agriculture industry has known for 40 years that using antibiotics can create superbugs. Only one company has taken the science seriously.

Once viewed as a forensic “silver bullet,” DNA evidence is coming under fire.

On the longstanding human fascination with a light source we could borrow but not share.

A 6-part investigation of the Space Shuttle Columbia disaster.

On the science of touch.

Medicine, the company says, can also be a tasty snack.

Purdue Pharma’s marketing materials say OxyContin works for 12 hours. It doesn’t. And this problem, long-denied by the drugmaker, is what makes it highly addictive.

What increased tourism means for the people of the Northwest Passage.

A single pill could take the sting out of our memories of trauma.

One woman’s hunt for possibility after an Alzheimer’s diagnosis.

A trip to the Museum of Jurassic Technology in Los Angeles.

Katharine Hayhoe is one of the country’s most influential atmospheric scientists, spreading the word about the effects of climate change. She’s also an evangelical Christian.

Susie Mc­Kinnon cannot hold a grudge. She is unfamiliar with the feeling of regret and oblivious to aging. She has no core memories. And yet she knows who she is.

Two percent of humans can hear the Hum, a mysterious, low rumble in the distance. It might exist. It might be imaginary. It might be both.

On the overstated effect of the Santa Ana winds on human behavior and the understated impact of climate change on LA’s seasons.

“As an American woman, I currently have less reproductive autonomy than I would have had the day I was born.”