Turn your sound on to hear the territorial call of an Amur Leopard https://t.co/hsPOoNjxsg

Alfred Nobel, creator of the famous Nobel Prizes, was a paradox: An arms dealer in life, Nobel decided in death to use his dynamite fortune to fund a peaceful foundation https://t.co/a0EOxJBm1D

Hikers at altitude and those who live in the foothills are grappling with a vital question: As mountain conditions become more perilous than ever, how can they stay safe? https://t.co/DOUkNDRrtE

Set at the foot of some of the best hiking and ski touring in the world, Canada's Duffy Lake appears a beautiful deep blue in this image #ShotOnSnapdragon. Paid content for @Snapdragon https://t.co/MGPg2e8rdi

Yom Kippur is the emotional climax of the Jewish faith’s high holy days—a holiday period that kicks off with Rosh Hashanah, the observance of the Jewish New Year https://t.co/KknYVSXZlz

Tucked into the Pyrenees, the small country of Andorra attracts travelers who ski, hike, climb—and volunteer for science https://t.co/iM7GL68EPx

The spots on these astoundingly diverse flowers may be explained by a model developed by mathematician Alan Turing more than half a century ago https://t.co/n9sclAeWac

As awareness of climate change grows, so too does the desire to do something about it. But what exactly is a carbon footprint, anyway? https://t.co/iy16DSCl8n

With a reputation for fickle weather and ravaging storms, Lake Superior is a boater's figurative Mount Everest https://t.co/PSP4F2YmIT

With the promise of crisp morning hikes and early evening sunsets, autumn beckons those with a love of the outdoors https://t.co/ExEkIRHbBw

These shrimp snap their claws so fast it evaporates water, pushing out a powerful shockwave to stun their enemies 🦐 #SuperNaturalSeries is now streaming on @DisneyPlus https://t.co/S7h9MT7uSY

To a veteran horologist, "time is still a man-made invention." In his Pennsylvania workshop, he fixes its flaws https://t.co/ANI41Enc7J

Parks and refuges aren't enough to preserve America's environment. Land, water, and wildlife need to be protected everywhere https://t.co/T9UaqUlRMb

The remains of a fortress built to repel Tibetan invaders weathers the elements in this archival image from Bhutan https://t.co/zluEsYGIhb

These ancient trees persisted for nearly 200 million years until they all but vanished. 

Now they line city streets https://t.co/xv0wEldtJD

The facility is the largest of its kind in the U.S. that can test top Category 5 winds. To generate such speeds, it requires fans six feet across and 15,000 pounds each, the weight of two trucks https://t.co/XHO8RujDUf

Penguins are master navigators, proving they're as clever as they are cute https://t.co/YYi0BzG4xZ

As the hobby soars in popularity, there’s an increase in calls for birders to help preserve the wildlife they love watching https://t.co/2pByu8JQIn

New research is uncovering a richer, more complex picture of women's roles as wives, priestesses, and scholars in ancient Greece https://t.co/k5rTAUYfla

See how common bat misconceptions came about, and just how vital bats are to our everyday lives https://t.co/tYrMcgQbMa