Heat weather

NPR - The dangerous heat wave that swept across much of the eastern U.S. over the July Fourth weekend could be the nation's new normal this time of year, according to experts. Scientists say climate change is driving more extreme temperatures and heavier rainfall. Both can contribute to significant, costly damage to roads. These extreme weather changes can cause pavement to expand, crack and warp, rendering some roads unusable until they are repaired. Engineers suggest that using a more durable — and more expensive — asphalt blend could be a solution for some roads that are subject to extreme temperatures. The way the U.S. has traditionally approached infrastructure, such as roads, is no longer sufficient for the future, says Mikhail Chester, a professor of engineering at Arizona State University. Here’s what else experts say can be done to help.