Brazil braces for another tailings dam collapse

Thousands of Brazilians braced Monday for the possible collapse of another tailings dam owned by mining giant Vale that threatens to spew millions of tons of toxic sludge over towns, rivers and forest.

A forest 'glow' reveals awakening from hibernation

Winters in the northern hemisphere are brutal. The harsh conditions drive some species to hibernate; bears reduce their metabolic state to conserve energy until spring. Forests also endure winter by conserving energy; they ...

Major step forward in the production of 'green' hydrogen

The first thermodynamically-reversible chemical reactor capable of producing hydrogen as a pure product stream represents a "transformational" step forward in the chemical industry, the authors of a new study claim.

Monkey experiments offer clues on origin of language

Green and vervet monkeys live on either side of Africa and their evolutionary paths diverged 3.5 million years ago, and yet the two species share a hard-wired vocabulary when faced with danger, clever experiments have shown.

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