Christopher Joyce

The world's oceans are rising. Over the past century, they're up an average of about eight inches. But the seas are rising more in some places than others. And scientists are now finding that how much sea level rises in, say, New York City, has a lot to do with exactly where the ice is melting.

A warming climate is melting a lot of glaciers and ice sheets on land. That means more water rolling down into the oceans.

But the oceans are not like a bathtub. The water doesn't rise uniformly.

After Hurricane Harvey, some Texas residents, politicians and scientists are wondering whether the whole U.S. system for predicting floods is any good.

The storm's deluge flooded parts of southeast Texas that had rarely, or never, been underwater before. Some areas got more than 50 inches of rain in a few days. "When the numbers started coming in it was a little scary," says Matt Zeve, the director of operations for the Harris County Flood Control District, which includes Houston.

Governments are wrapping up a meeting in Bonn, Germany, to figure out how to implement a global climate agreement.

The conference has focused on the pledges to reduce greenhouse gas emissions, which nations made two years ago in Paris. But even as negotiators debate the details, scientists are warning that carbon dioxide levels are again on the rise, and the efforts in Paris may not be enough.

Hurricane Harvey was the worst flood in Houston's history. Scientists and citizens are still piecing together why it was so bad, but it's becoming clear that a lot of the damage comes down to how people have built America's fourth-largest city.

You can see the problem from your car. Houston is a sprawling web of strip malls and 10-lane freeways.

It is "extremely likely" that human activities are the "dominant cause" of global warming, according to the most comprehensive study ever of climate science by U.S. government researchers.

The climate report, obtained by NPR, notes that the past 115 years are "the warmest in the history of modern civilization." The global average temperature has increased by about 1.8 degrees Fahrenheit over that period. Greenhouse gases from industry and agriculture are by far the biggest contributor to warming.

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In Mexico City and surrounding areas, rescuers are still searching for casualties and survivors of Tuesday's earthquake. More than 200 people are believed to have died.

Geologically speaking, Mexico City is not built in a very good place.

This is the second big quake in Mexico in less than two weeks. It came 32 years to the day after another deadly quake. And there will be more in the future, though when is anyone's guess.

Hurricane Irma is hovering somewhere between being the most- and second-most powerful hurricane recorded in the Atlantic. It follows Harvey, which dumped trillions of gallons of water on South Texas. And now, Hurricane Jose is falling into step behind Irma, and gathering strength.

Is this what climate change scientists predicted?

In a word, yes. Climate scientists such as Michael Mann at Penn State says, "The science is now fairly clear that climate change will make stronger storms stronger." Or wetter.

Scientists have produced a preliminary map of the flooding in Houston from Tropical Storm Harvey.

The map doesn't yet represent all the flooded areas, and for technical reasons, it likely understates the extent of flooding. But even this early analysis shows that flooding from Harvey extended well beyond the traditional flood plains mapped out by the federal government.

President Trump pledged to rebuild Houston and Texas bigger and better than ever. However, earlier this month, he rescinded an Obama executive order that required flood-damaged property to be rebuilt higher and stronger. Trump also has proposed eliminating federal flood mapping and the federal government's top disaster agency.

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