The Washington State Department of Ecology fears a new Environmental Protection Agency rule could put water quality at risk in the Pacific Northwest. The new EPA rule affects Section 401 of the Clean ...

Hamilton's rule, introduced in the 1960s, says that altruism—helping others at your own expense—can evolve when the benefits to others, multiplied by how closely related they are to you, outweigh the ...

Hamilton’s rule—the mathematical relation quantifying the idea that genetically related subjects are more likely to help each other, even at the expense of their own survival—has been observed in many ...

Washington state scientists are rebuking a federal draft report that could be used to roll back environmental regulations, calling its science inaccurate and misleading. On Friday, the state ...