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Lower Overhead

Cincinnati has purchased 100 percent renewable energy to operate most of its municipal buildings through at least 2021, cutting its utility rates by more than $100,000 annually.

Independent Action

More than 50 mayors from around the globe have signed the Chicago Climate Charter, intended to guide cities toward reaching greenhouse gas emissions reductions similar to those targeted in the Paris climate accord.

Deadly Cargo

The Iranian tanker Sanchi oil spill in the East China Sea has scientists worried about unknown impacts caused by the toxic nature of the ultra-light, highly flammable oil.

Eco-Villains

A beach cleanup in the Philippines resulted in the finding that Nestlé, Unilever and the Indonesian company PT Torabika Mayora were the top sources of plastic waste there.

Green Team

The Seattle Mariners’ Safeco Field recycles 96 percent of all waste, garnering the team Major League Baseball’s Green Glove Award for 2017.

All That Glitters

Decorative plastic glitter and the microbeads used in scrubs and shower gels pose a threat to fish and oceans, say scientists.

Temporary Protection

The U.S. Environmental Protection Agency has decided not to rescind Obama-era environmental protections that restricted the opening of a copper and gold mine in Alaska’s Bristol Bay that would threaten fisheries and other natural resources.

‘Sink’ Setback

Logging, drought and wildfires may be turning forests in Africa, Asia and Latin America into carbon emitters rather than absorbers.

Clear Gain

Scientists have developed a transparent, luminescent solar concentrator that looks like clear glass that could potentially supply two-fifths of U.S. energy needs.

Top Polluters

New research shows that a 100 fossil-fuel producers globally are responsible for 71 percent of all global greenhouse gas emissions during the last 30 years.