Discover the 25 Most Toxic Things on Earth, from natural venoms to synthetic poisons. Learn what makes them lethal and how ...

The golden poison dart frog may be tiny, but it has earned a formidable reputation in the animal kingdom. Native to a small ...

Our Earth’s atmosphere was not always the safe haven it is today. New research, informed by ancient ocean fossils, provides a glimpse into a time when our planet’s atmosphere was inhospitable and ...

Perchlorates, a group of toxic chemicals that pollute groundwater, first form on rare particles in the stratosphere, scientists have discovered. When you purchase through links on our site, we may ...

The Environmental Protection Agency under the Trump administration has proposed a new rule that would dramatically weaken safety reviews for some of the most toxic chemicals that are already on the ...