Paris climate talks

Elon Musk tweeted he is "cautiously optimistic" the president will make a "positive decision" on the Paris agreement.

Friday’s ceremony in New York City, coinciding with Earth Day, arrives amid troubling reports about the impact of global warming.

Presidents Barack Obama and Xi Jinping said Thursday that their countries would join a global agreement to reduce emissions.

Bob Dudley, the chief executive officer of one of the world’s largest oil and gas companies, warned that BP sees carbon emissions rising 25 percent by 2035, a level scientists say is dangerously high.

At the Investor Summit on Climate Risk at the United Nations headquarters this week, investors lauded the financial potential of global clean energy projects.

Businesses aren’t doing enough to curb emissions in their supply chains, a report says. But one tech company is trying to buck that trend.

Falling crude prices could weaken investment in new technologies needed to reach U.N. climate change goals set in Paris.

U.S. and global businesses face growing financial risks from carbon policies and the effects of climate change. But few disclose threats to investors, experts say.

The U.S. still comes up short on aggressive policies and investments to develop a clean energy boom that drives future growth.

World leaders will have to balance domestic concerns and global realities in order to implement the agreement's key provisions.

Leaders of almost 200 countries OK'd the pact that aims to hold the global temperature increase below 2 degrees Celsius above preindustrial levels.

The president touted the American team's role at the Paris conference, while arguing the country's investments in solar and wind energy are creating middle-class jobs.

In the wake of the new climate-change agreement, enthusiasm for sustainable energy-producing alternatives is likely to swell. Here are a few possibilities.

However, China and a number of other developing countries say they are pleased with the new agreement.

After more than 20 years of failed attempts, most of the world's countries have agreed to cap increases in temperatures and curb the consumption of fossil fuels.

The landmark agreement was presented to delegates in Paris Saturday after negotiators worked overtime to iron out differences.

A years-long effort for a universal pact to prevent catastrophic climate change may be concluding.

Diplomats are racing to resolve a handful of key sticking points this weekend as countries seek to dramatically reduce their dependence on fossil fuels.

As diplomats at a U.N. climate change conference this week come closer to reaching a deal, the global coal industry's financial troubles are mounting.

Joule Unlimited is one of a handful of companies working to develop advanced biofuels that avoid harmful greenhouse gas emissions and eschew fossil fuels.

In his first big speech of the climate negotiations, Secretary of State John Kerry announced today the U.S. would double its spending to help poorer nations adapt to climate change.

Christiana Figueres, the U.N. climate change chief since 2010, is tasked with persuading the world's leaders to tackle the climate crisis at COP21 in Paris this week.

A new study, presented at the climate summit in Paris, suggests a drop in China's coal consumption may have reduced global carbon dioxide emissions this year.

The EU extended restrictions placed in 2013 on Chinese solar panel manufacturers due to complaints of "dumping" by local companies.

A new agreement to fight climate change is more likely as negotiators approved a draft at talks outside Paris Saturday.

The Colombian capital is at the forefront of a global effort by cities to transform their public transit systems into cleaner, more efficient networks.

The tech giant's latest investment would add 842 megawatts to its clean energy capacity -- boosting its renewable energy capacity to 2 gigawatts.

Emissions and rising temperatures are already having a devastating impact on the continent, where nations lack resources to confront the impacts of climate change.

Scientists and engineers around the world are working on nuclear fusion reactors that, if successful, could replace today's carbon-intensive power plants.

While authorities in Beijing issued an “orange alert” following the deteriorating outdoor conditions, there is no such formal mechanism to issue an alert in the Indian capital.