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Are marijuana regulations weeding out family farmers?

As marijuana becomes a legitimate business, safety regulations and bureaucracy could make life tough for small "craft" growers.


Should I kill my weeds by peeing on them?

A reader wonders if urine will get rid of unwanted weeds. Umbra says, sadly, it's piss poor.


Should climate hawks push Elizabeth Warren to run for president?

Warren aggressively opposes Keystone XL, the Trans-Pacific Partnership, and corporate power. That’s quite a contrast with Clinton’s views.


This is exactly why we need more women in tech

Who run the world? Girls ... who make reproductive healthcare video games.


The 8 most clueless Earth Day tweets from Corporate America

The World's Most Unloved Holiday barely beat out Paris Hilton's dead chihuahua for Facebook's No. 1 trending news story, but a win is a win!


Earth Day is dead. Long live the soul of Earth Day

The organizers of the original Earth Day set out to unite progressive causes. Can the climate movement succeed where Earth Day failed?


Meet the scientists making new climate discoveries (and fudge) at the South Pole

T.J. Fudge (yes, he makes a mean fudge) and the other researchers are looking at ice cores at the South Pole, for new clues about regional climate change.


Obama burns Florida’s climate deniers on their home turf

The president uses his Earth Day message to call for climate action -- and throw a few jabs at Marco Rubio and Rick Scott.


Can cheaper corn change the way we farm?

Corn prices are low and corn planting is, too. Will farmers diversify crops or put land aside as a result?