Speciesism, like racism, imperils humanity and the planet

With the world's population topping 8 billion last year, it's clear that humans have achieved a unique status in Earth's history. We are the only creature that dominate all other organisms on the planet, from animals and ...

How old is California's Yosemite Valley?

First-time visitors to Yosemite Valley gape in awe at the sheer granite wall of El Capitan and the neatly sliced face of Half Dome, aware, perhaps vaguely, that rain and glaciers must have taken a long time to cut and sculpt ...

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