A group of 287 scientists and current and former NASA employees has issued a declaration lambasting budget cuts, grant cancellations and a “culture of organizational silence” that they say could pose a risk to astronauts’ safety.

A collision observed between two black holes, each more massive than a hundred suns, is the largest merger of its kind ever recorded, according to new research. Gravitational waves were predicted by Albert Einstein in 1915 as part of his theory of relativity, but he thought they were too weak to ever be discovered by human technology.

Thirty years ago, a heat wave settled over northeast Illinois. By the time the heat relented, 739 people had died and the city was using refrigerated trucks as makeshift morgues.

Drought and intermittent cold spells likely played a role in the rough start, according to experts.

President Donald Trump and congressional Republicans earlier this month curtailed federal tax incentives for the solar energy industry and for individuals and companies that purchase solar panels.

“This year, the names represent iconic Chicago landmarks woven into the city’s fabric and known to all visitors of our beloved city and community,” Chicago Piping Plovers said.

Researchers studied specimens of small mammals in the Field Museum’s collection to explore the ways animals are adapting to urbanization.

The National Weather Service is warning of an ongoing threat for flash flooding in the Chicago region through Saturday.

Texas and the rest of the nation are mourning as the death toll rises to 120 almost a week after catastrophic flooding devastated parts of the state over Fourth of July weekend.

The 10-year summer average of the National Oceanic and Atmospheric Administration’s climate extreme index, which tracks hurricanes, heavy rain, droughts and high and low temperatures, is 58% higher than it was in the 1980s.

The National Weather Service issued a flash flood warning at 9:46 p.m. Tuesday night for Chicago and Cicero and the situation quickly escalated.

Only a small group of people have regular access to the enchanting rooftop sanctuary atop the Center on Halsted in Lakeview. Let's take a look.

Operators of Camp Mystic, a century-old summer camp in the Texas Hill Country, said Monday that they lost 27 campers and counselors, confirming their worst fears after a wall of water slammed into cabins built along the edge of the Guadalupe River.

Officials at Shedd Aquarium say they are guardedly optimistic about the outcome of a groundbreaking surgery on 12-year-old Kimalu, who is now the first beluga whale to recover from general anesthesia.

A contest is now open to submit names for Imani and Searocket’s three offspring.

More than 170 EPA employees put their names to the document, with about 100 more signing anonymously out of fear of retaliation.