When it comes to African wildlife, few things capture the imagination like the Big Five animals. I still remember the first time I saw a rhino. It was about 20 years ago, and I was on my first ever ...

Editor’s Note: Call to Earth is a CNN editorial series committed to reporting on the environmental challenges facing our planet, together with the solutions. Rolex’s Perpetual Planet initiative has ...

In the 1800s, when blood sports were more socially acceptable, the term “Big Five” was coined to refer to the lion, rhino, buffalo, elephant and leopard – the animals that trophy hunters in Africa ...

A global study found that large animals consume far more ecosystem energy than expected, challenging long-standing ecological theories.

It’s not easy being big. That’s the conclusion executive producer Tom Hugh-Jones (“Planet Earth II,” “Night on Earth”) and producer Bill Markham (“Wildest Latin America,” “Animal”) came to when ...

When Tropical Storm Hilary drenched the town of Big Bear and nearby communities, some mountain dwellers were trapped by flash floods, debris flows and washed out roadways. But not local residents ...

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For animals that weigh more than a tonne, the difficulty of staying cool while travelling over long distances is the key limiting factor for their speed, regardless of whether they run, swim or fly, ...

An analysis of more than 1,000 species shows that birds, mammals and reptiles on islands tend to be either miniature or gigantic versions of their mainland counterparts — evidence that an evolutionary ...