Mars will be in "opposition" on Oct. 13: the sun and Mars will be on opposite sides of Earth. It's going to be ideal for viewing the red planet.

Large-scale solar farms are running into opposition from people who want to save farmland. Now solar companies are trying to combine solar and farming.

Climate and environment policies nearly always end up in court these days. They may have a harder time surviving if Amy Coney Barrett cements a conservative majority on the Supreme Court.

Wildfires in California have set a new record, but some fire scientists say focusing on that number is doing more harm than good.

The study compared drinking habits of adults age 30-80 with their habits a year earlier. The study found the increase is most pronounced among women, for whom days with heavy drinking spiked by 41%.

The scientists' work led to a test to protect blood transfusion recipients from hepatitis C and drugs to treat the infection that have saved millions of lives, according to the Nobel Assembly.

A new electric vehicle policy. Renewable energy. 10 billion trees: Pakistan launches ambitious green policies. Will they succeed?

China is investing in both coal and renewable energy, the European Union promises to dramatically reduce carbon emissions and the U.S. is leaving the Paris Agreement altogether. What will 2021 hold?

A survey of 17 cities found more than 50,000 pandemic-related eviction filings. Housing advocates worry that increased housing instability will lead to more COVID-19 and other illnesses.

The fires, which have scorched nearly 6,000 square miles in California, now threaten to tear through communities in the state's picturesque wine country, forcing thousands to evacuate.