Researchers quantify toxic ocean conditions during major extinction 93.9 million years ago

Oxygen in the atmosphere and ocean rose dramatically about 600 million years ago, coinciding with the first proliferation of animal life. Since then, numerous short lived biotic events — typically marked by significant climatic perturbations — took place when oxygen concentrations in the ocean dipped episodically.

Video: The toxic found footage of The Bay

There’s a lot of debate in the horror world about found footage, which has practically become a genre in itself. 

The pros?

Just how poisonous is the moon?

The moon could be a highly toxic place, say scientists, warning of cancer and breathing problems even when astronauts remain in their space suits.

Water treatment plants may make water more toxic

Waste water treatment could actually be increasing the amount of some toxins, by transforming common pain-killing drugs into more dangerous forms.

Nanoparticles lethal to Arctic ecosystem

Queen’s University researchers have discovered that nanoparticles - now found in everything from socks to suntan lotion - may be causing irreparable harm to soil systems and the environment.

Cinnamon 'can replace harmful chemicals' in nanotech process

A University of Missouri researcher says it's possible to replace nearly all of the toxic chemicals required to make gold nanoparticles - with cinnamon.