From banning plastic bags to regulating solar power, states across the country asked voters to make important decisions on energy and the environment.
carbon emissions
Carbon Tax Initiative Fails in Washington State
Environmental groups were divided over the nation's first carbon tax ballot measure.
Landmark Paris Climate Accord Comes into Force
Still, much work remains to limit emissions and damage from climate change, said top United Nations and World Bank officials, scientists, and leaders of organizations combating the climate threat.
Map Reveals Hot Spots for Arctic Greenhouse Gas Emissions
By bringing together data on permafrost stability, soils, and other Arctic conditions, scientists have plotted where permafrost is vulnerable to collapse, which could release long-stored carbon.
Trump Touts "Clean Coal" in Second Debate
The Republican presidential candidate also attacked regulation of energy production by the Environmental Protection Agency.
Europe to Push Paris Climate Accord over Brink to Take Effect
Enough member states in the European Union have already individually ratified the agreement to meet the emissions requirement for the agreement to go into force.
Aquatic Plants May Accelerate Arctic Methane Emissions
About two thirds of the gas produced by a study area near Barrow, Alaska, came from increasingly abundant greenery covering only 5% of the landscape, researchers estimate.
El Niño Will Increase Atmospheric Carbon to Historic Levels
Tropical fires and drought-stricken ecosystems that normally serve as sinks will release carbon, contributing to high atmospheric concentrations through 2016 and beyond.
The 2015 Indonesian Fires: Less Carbon Release Than Was Thought
Preliminary results from field measurements of smoldering Kalimantan peatlands suggest that the fires emitted 8% less carbon dioxide and 55% less methane than were previously estimated from lab tests.
Nations’ Pledges to Reduce Emissions and the 2°C Objective
Preparatory workshop for the 21st Conference of Parties to the United Nations Framework Convention on Climate Change; Paris, France, 3 November 2015