World leaders are meeting in Egypt for the next two weeks to talk about reining in climate change and paying for its deadly effects. Here's what you need to know.

Global efforts to limit climate change can't happen without more aid. Rich countries promised $100 billion to poorer ones to cope with global warming but seven years later, have yet to deliver.

Impacts from global warming hit the world's poorest countries hardest, although they're responsible for a relatively small share of climate emissions. They need more money to protect against risks.

Development banks need new strategies to address problems that cut across national borders, U.S. Treasury Secretary Janet Yellen said.

Americans' investments are now getting dragged into the culture wars. Investors are looking at how climate change affects the bottom line of companies, but the GOP wants to penalize them for it.

Around 50,000 solar and battery power systems have been installed on homes in Puerto Rico in recent years, and most seemed to continue working during Hurricane Fiona.

Amid Republican attacks, investors focused on environmental, social and governance (ESG) issues say they are just trying understand emerging risks and opportunities.

About 20% of data centers in the United States already rely on watersheds that are under moderate to high stress from drought and other factors. However, few companies are talking about the issue.

An appeals court said two climate change lawsuits against the oil industry should be heard in state court. Oil companies have been fighting such cases on jurisdictional grounds for years and losing.