Bloomberg said they were looking for cities with ambitious - yet realistic - goals to address climate change. Pittsburgh wants to use 100% renewable energy by 2030.
From our Trump on Earth podcast, we ask whether a reckoning with some of the horrifying possibilities of climate change moves people to action or complacency?
Once prized like fine art, thousands of dried and preserved plants specimens are being digitized to help answer questions about conservation, climate change and development.
The Trump administration’s much-anticipated replacement of the Clean Power Plan is unlikely to reduce harmful greenhouse gases by much, and could end up making air quality in parts of Pennsylvania worse.
