Rebecca Hersher

Under the agreement hammered out in 2015, the first day that countries can reverse the promises they made is Nov. 4, 2019. It will be another year before the American withdrawal is official.

Kurdish forces in northern Syria relied on American troops to help them maintain control of the region. Now, they are aligning themselves with Syrian forces that are backed by Russia.

More than 50 people are dead in the aftermath of Typhoon Hagibis, which dropped extreme amounts of rain over the weekend and caused catastrophic flooding in residential areas.

Climate change is causing more rain and flooding in towns across America. We go back to a town where a proposal to tear down historic buildings to reduce flood risk nearly destroyed the community.

Scientists have released the most detailed look yet at where and how the U.S. government helps residents retreat from flood-prone areas. Climate change is making such questions more urgent.

Climate change is driving deadly flash flooding across America. In one Maryland town, back-to-back flooding has forced residents to make huge decisions about how their community will adapt.

The U.N. Intergovernmental Panel on Climate Change released a report on how the world's oceans and ice are affected by climate change. Sea level rise is accelerating as is ocean warming.

The U.N. Intergovernmental Panel on Climate Change has released its latest report on the oceans, and it's not good. The report also notes a relatively new phenomenon in the oceans: marine heat waves.

Cities, states and federal governments are suing oil companies, alleging they're financially responsible for damaging effects of climate change. It could help with costs of adapting to a hotter Earth.

Humanity is not on track to avoid the most catastrophic impacts of climate change. Delegations from nearly 200 countries are meeting to discuss promises they made to reduce greenhouse gas emissions.

World leaders are meeting in New York on Monday amid growing fear that promises countries have made to reduce emissions are insufficient to avoid the most catastrophic effects of climate change.

Home renovations can kick up dangerous dust from lead-based paint. A new report finds the Environmental Protection Agency is not adequately enforcing rules meant to protect kids from lead exposure.

The communities that might be most prepared for a storm like Dorian are also ones that are the most vulnerable to sea level rise. Because of climate change, Charleston floods on a regular basis.

Evacuating away from a hurricane is difficult for elderly people who are ill, don't have access to transportation or live on a fixed income. Slow, rainy storms such as Dorian are particularly tough.

As states issue evacuation orders ahead of Hurricane Dorian's arrival, many elderly people have stayed behind. That group of people can have specific challenges when it comes to evacuating.

Not all bullets are created equal. This video compares the damage caused by different kinds of rounds.

The sea level is rising more in some coastal places than in others. But why is that? It has to do with wind, currents, glaciers and even the last Ice Age.

Scientists need to track the history of sea temperatures precisely to model climate change. A newly discovered clue in measurements taken by sailors in the 1930s could have far-reaching implications.

The way we produce food and manage land must change radically if humans hope to avoid catastrophic global temperature rise, according to a new report by the United Nations panel on climate change.

The central U.S. just experienced the most widespread river flooding ever recorded there. Flood defenses in major cities largely performed well, but many smaller communities were simply overwhelmed.