Until the late 1990s, the amount of vegetation worldwide was increasing. But then it stopped, and a new study links this troubling trend to climate change.

"The world is gradually becoming less green, scientists have found. Plant growth is declining all over the planet, and new research links the phenomenon to decreasing moisture in the air—a consequence of climate change," writes Chelsea Harvey.
A recent article in the journal Science Advance says that vegetation levels started decreasing over the last 20 years. "Since then, more than half of the world’s vegetated landscapes have been experiencing a 'browning' trend, or decrease in plant growth, according to the authors," notes Harvey.
The cause is a decrease in air moisture, which climate models show will continue as global warming continues, says Harvey. "Many researchers have suggested that climate change, on the whole, is likely to be a net negative for much of the world’s vegetation, including agricultural crops. The new study would seem to suggest that those consequences are already in motion."
FULL STORY: Earth Stopped Getting Greener 20 Years Ago

Manufactured Crisis: Losing the Nation’s Largest Source of Unsubsidized Affordable Housing
Manufactured housing communities have long been an affordable housing option for millions of people living in the U.S., but that affordability is disappearing rapidly. How did we get here?

Americans May Be Stuck — But Why?
Americans are moving a lot less than they once did, and that is a problem. While Yoni Applebaum, in his highly-publicized article Stuck, gets the reasons badly wrong, it's still important to ask: why are we moving so much less than before?

Research Shows More Roads = More Driving
A national study shows, once again, that increasing road supply induces additional vehicle travel, particularly over the long run.

Which US Rail Agencies Are Buying Zero-Emissions Trains?
U.S. rail agencies are slowly making the shift to zero-emissions trains, which can travel longer distances without refueling and reduce air pollution.

San Diego School District Approves Affordable Housing Plan
The district plans to build workforce housing for 10 percent of its employees in the next decade and explore other ways to contribute to housing development.

Lawsuit Aims to Stop NYC’s ‘City of Yes’ Zoning Reforms
A lawsuit brought by local lawmakers and community groups claims the plan failed to conduct a comprehensive environmental review.
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