As severe thunderstorms threatened to hit parts of the Midwest and South on Wednesday, forecasters warned of potentially deadly flash flooding, strong tornadoes and baseball-sized hail.

The potent storm system was expected to bring the threat of "significant, life-threatening flash flooding" starting Wednesday and continuing each day through Saturday, the National Weather Service said.

By Bradley J. Cardinale, Penn State; Emmett Duffy, Smithsonian Institution, and Rod Schoonover, Georgetown University

(THE CONVERSATION) When the natural environment is stretched beyond its ability to meet basic human needs for food, clean air, drinkable water and shelter, it is not just a humanitarian concern for the world community. Research shows that these crises are a matter of national security for the U.S. and other countries.

As Spain choked on stubborn drought last year, a reservoir north of Barcelona emptied, revealing a medieval church.

But in the last few weeks, rising waters have again covered the Sant Roma de Sau church as the country's weather took an abrupt turn.

Wildfires have hit several regions in western Japan, injuring at least two people, forcing dozens of residents to evacuate and damaging a number of homes as hundreds of firefighters battled the widening blazes in the mountainous areas.

The fires in the western towns of Okayama, Imabari and Aso broke out Sunday, quickly burning hundreds of hectares (acres).

Prolonged droughts, wildfires and water shortages. Torrential downpours that overwhelm dams and cause catastrophic flooding.

Around the globe, rising temperatures stoked by climate change are increasing the odds of both severe drought and heavier precipitation that wreak havoc on people and the environment.

Wildfires forced a mandatory evacuation Sunday in a North Carolina county still recovering from Hurricane Helene, and South Carolina's governor declared an emergency in response to a growing wildfire in that state. Hundreds of miles north, the New Jersey Forest Fire Service was battling a blaze in the Wharton State Forest.

The North Carolina Department of Public Safety announced a mandatory evacuation starting at 8:20 p.m. Saturday for parts of Polk County in western North Carolina about 80 miles (129 kilometers) west of Charlotte.

The Mount Lewotobi Laki Laki volcano in south-central Indonesia erupted three times into Friday, sending an ash column 8,000 meters (26,000 feet) high and prompting authorities to expand the danger zone around the volcano.

The volcano on the remote island of Flores in East Nusa Tenggara province has had hundreds of earthquakes and visible volcanic activity has significantly increased in the last seven days.

From the grounds of a gas-fired power plant on the eastern shores of Canada, a little-known company is pumping a slurry of minerals into the ocean in the name of stopping climate change.

Whether it's pollution or a silver bullet that will save the planet may depend on whom you ask.

Wildfires fueled by dry conditions and gusting winds burned in a few Southern states Thursday, forcing evacuations in Texas and prompting Florida officials to close part of a major highway with spring break in high gear.

A wildfire in Sam Houston National Forest near Houston prompted the evacuation of about 900 homes and closed schools. The National Weather Service issued elevated fire warnings around the nation's fourth-largest city.

By Chris Nowotarski, Texas A&M University

(THE CONVERSATION) Windstorms can seem like they come out of nowhere, hitting with a sudden blast. They might be hundreds of miles long, stretching over several states, or just in your neighborhood.