An antique black and white photograph of the extinct Caspian tiger that lived in Central Aisa, measuring about 10 feet and 530 pounds.

Planet Earth

Why Did the Caspian Tiger Go Extinct?

African elephant

How Many Elephants Are Left In The World?

humpback whale under water

How Many Whales Are Left In the World?

Female cheetah with her two cubs

Are Cheetahs Endangered and Why Are Populations Declining?

Climate change - comparing a beautiful green world against the ravages that climate change is bringing

What Are Earth’s Nine Planetary Health Boundaries, and How We Are Exceeding Them?

Cheetah crouched in the grass

How Fast Are Cheetahs, and Other Fascinating Facts About the World's Quickest Cat

An Amur Leopard Cub lounges in a tree

Here Are Just 4 Animals We Could Lose Before 2050

An endangered Javan rhino in nature

Javan Rhinos: The Race to Save One of Earth's Rarest Large Mammals

Working detection dog for conservation

Environment

Working Detection Dogs Help Conservation Researchers Sniff Out Data

2 sperm whales swimming beneath the surface level of the ocean

Ocean Gardeners: Why Whale Poop Matters Now More Than Ever

Rows of young maple trees in a plant nursery

Reforestation: How Do We Plant More Trees If There's a Seed Shortage?

Close-up of Columbian spider monkeys

What Makes a Spider Monkey So Unique, and Why They Are Endangered

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Discover Magazine

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