"United States government engineers sent to help with the crisis in Japan are warning that the troubled nuclear plant there is facing a wide array of fresh threats that could persist indefinitely, and that in some cases are expected to increase as a result of the very measures being taken to keep the plant stable, according to a confidential assessment prepared by the Nuclear Regulatory Commission."

"The depletion of the ozone layer shielding Earth from damaging ultraviolet rays has reached an unprecedented low over the Arctic this spring because of harmful chemicals and a cold winter, the U.N. weather agency said Tuesday."

"As the operator of the Fukushima Daiichi Nuclear Power Station continued to dump radioactive water into the Pacific Ocean on Tuesday, company officials said that seawater collected near the facility contained radiation several million times the legal limit."

"Libya warned on Sunday that NATO-led air strikes could cause a 'human and environmental disaster' if they damaged the country's massive Great Man-Made River (GMMR) project."

"The United Nations has suggested three pesticides and three industrial chemicals be put on a trade "watch list" because they can threaten human health and the environment, the U.N.'s Food and Agriculture Organization said on Friday."

Questions are mounting about the possible role of a new family of pesticides, the neonicotinoides, in the "colony collapse disorder" that is decimating commercial honeybees. Will EPA reconsider its approval of those pesticides?

"The Fukushima Daiichi nuclear plant could continue to release dangerous radiation into the air for several months, Japanese officials said Sunday, acknowledging their painstakingly slow progress in the battle to regain control of the badly damaged facility."

"The workers at Japan's stricken nuclear power plant — known as the Fukushima 50 — expect some of them will die within weeks or months, the mother of one has reportedly said."

"Ants and termites have a significant positive impact on crop yields in dryland agriculture, according to a paper published in the journal 'Nature Communications' by scientists at CSIRO and the University of Sydney."

"Aircraft condensation trails criss-crossing the sky may be warming the planet on a normal day more than the carbon dioxide emitted by all planes since the Wright Brothers' first flight in 1903, a study said on Tuesday."