Irma could make a run for Category 4 strength before landfall.
Tropical Storm Harvey has pummeled Houston and the surrounding area since Friday. And the rain is still falling.
July was record warm for Alaska's northernmost city and the hottest month on record for the globe at Death Valley.
Over the past 50 years, 39 of the park's glaciers have shrunk dramatically, some by as much as 85 percent.
March was the second hottest March on record, according to NASA, behind only 2016, a mark of rising global warming.
Proposed cuts to four NASA climate-related missions are seen as effort to curb its role in climate science.
Warm weather could send Arctic sea ice to a record low winter peak as Antarctic sea ice sets an all-time record low.
2016 was the second hottest year on record for the U.S. and the 20th consecutive year above average.
The global warming signal in the Arctic was stronger and more pronounced during 2016 than any other year.
Skyrocketing Arctic temperatures, which are rising twice as fast as the global average, have set off a downward spiral in sea ice levels.
This year will be the hottest on record by a significant margin, the World Meteorological Organization told diplomats gathered in Marrakech, Morocco, this week.
Not only that, but the month tied July as the hottest month the world has seen in the last 136 years.
Typhoons that make landfall in the Northwest Pacific have intensified more, and faster, than those that stay out at sea.
May was the fifth record warm month this year, upping the odds that 2016 will be the hottest year on record.
With the streak of record-warm months continuing, 2016 is looking likely to become the hottest year on record.