Despite advanced technology and search techniques the rugged seafloor can hide objects much larger than a plane.
A new study looks back into history to assess human impacts on the range of Asian elephants and finds sharp decline starting several centuries ago.
More than 100 world leaders have pledged to end the destruction of forests by 2030 as a way to slow climate change. That will require changing how the world produces four widely used commodities.
Palm oil is responsible for widespread deforestation and labor abuses, but it's also cheap and incredibly useful. That's why many advocates call for reforming the industry, not replacing it.
Release of GM mosquitoes in Florida is imminent. But a multidisciplinary team of scientists believe that more studies are needed first. They encourage a publicly accessible registry for GM organisms.
A scholar who has reviewed the efforts of nations around the world to protect their citizens from foreign interference says there is no magic solution, but there's plenty to learn and do.
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