Tiny mite triggers domino effect in the high Andes

The idea of food chains and food webs in the animal kingdom is simple: Remove a link or thread, and the system is broken. But nature is complex, and it's not always clear how the absence of one species may impact others.

UN to agree on plan for 'historic' plastics treaty

More than 100 nations convening in Nairobi next week are expected to take the first steps toward establishing a historic global treaty to tackle the plastic crisis afflicting the planet.

Plastic pollution in oceans on track to rise for decades

Plastic pollution at sea is reaching worrying levels and will continue to grow even if significant action is taken now to stop such waste from reaching the world's oceans, according to a review of hundreds of academic studies.

Mexico says pig die-off due to salmonella, pneumonia

Mexican authorities breathed a sigh of relief Friday when experts determined that a die-off of pigs in December at a local slaughterhouse was due to salmonella and Pasteurellosis, a commonly occurring infection, and not African ...

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