African elephants have long been thought of as a single species, but a critical mass of genetic studies now proves there are two.

I've seen a few wild grizzly bears, mostly in Alaska and British Columbia, and always from a distance. But each grizzly I've caught sight of was as fearsome and sublime as the last. You never get used to their raw power and massive bodies, or the mysterious intelligence in their dark, close-set eyes.

I have a king bed, one of those memory-foam mattresses that doesn't jiggle as you get in or out. Even if you cleaved it down the middle with a pickax, the thing wouldn't tremble. It's practically earthquake-proof.

If the dinosaurs are any indication, there's a place in our pantheon for the extinct. My son has a blue plushy allosaurus he calls Spot-Spot, with whom he often sleeps.

We are sliding back into a dark era, and there seems little we can do about it. I am profoundly depressed at just how difficult it has become merely to get a realistic conversation started on issues such as climate change or genetically modified organisms.

The effects of climate change are real and only getting worse. I would like to build on the promises of the Paris Climate Agreement and make our country a global leader on the fight against climate change.

Research shows that the climate of an organization influences an individual's contribution far more than the individual himself.

As a professional snowboarder, my goal is to educate and create awareness around the issues we're facing with climate change.