Biodiversity

"The search for the killer of America's bees is a little bit like an Agatha Christie novel. Suspicion has turned toward one shady character and then another: declining habitat; parasites; diseases; pesticides.

Or did they all conspire in the recent mass murder of the country's bees?

This year's mild winter in much of the U.S. has meant a longer tick season. That has meant more contact between ticks and mammals like humans and dogs -- and more tick bites. It is still too early to be sure what this will mean for tick populations or the prevalence of tick-borne disease in the coming year.

"What was killing all those honeybees in recent years?  New research shows a link between an increase in the death of bees and insecticides, specifically the chemicals used to coat corn seeds."

"Dow AgroSciences LLC is asking the Department of Agriculture to sign off on a new genetically engineered corn seed that is resistant to not only glyphosate, but also 2,4-D, a World War II-era chemical that has been associated with a host of serious health problems."

"Dozens of conservation groups and nearly 100 scientists voiced opposition on Thursday to an Obama administration proposal they say would make it much harder for imperiled creatures to qualify for protection under the Endangered Species Act."