How isotopes reveal insights into ecosystems

Isotopes of elements are like siblings. They have the same number of protons and electrons but a different number of neutrons than the primary form of the element. This difference in neutrons doesn't affect their chemical ...

Dead fish wash up on riverbank in drought-hit Iraq

Thousands of dead fish have washed ashore in southeast Iraq, prompting an official investigation into the wildlife disaster that officials said Monday may be linked to drought conditions.

Repentant ranchers rescuing Colombian wildlife

Two newborn pumas and a convalescing porcupine share a room in the home of the Zapata family, which has renounced livestock farming to focus on stewardship of the Colombian Amazon and its animals uprooted by deforestation.

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