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It's a mystery how butterflies manage to make their brilliant wing colors, but Yale physicists got a glimpse when they took the question to the lab, breeding dull brown butterflies into purple ones.

The daily effects of strong winds, large waves, as well as rising sea levels — which are fueled by human-caused climate change — are causing beaches on the Outer Banks to wash away.

The alleged gunman, 24, has been charged with murder after the Friday shootings in northeast Mississippi. The victims include his father, uncle, brother and a 7-year-old relative, authorities said.

"The business activities of our investors and the rights of our nationals must not be unjustly infringed," a foreign ministry spokesman said after about 300 South Koreans were detained.

Raul Castro is expected to step down as head of Cuba's ruling Communist Party at the party's Congress beginning today. But that doesn't mean Cuba's one-party-system is likely to see any big changes.

The National Park Service expects a busy summer as the country begins to emerge from the coronavirus pandemic. Last year 237 million people flocked to national parks to escape from COVID-19.

Ai Weiwei, the world-renowned Chinese artist and dissident, has created a deeply autobiographical work for the Venice Biennale exhibit. It is a series of dioramas about his life as a political prisoner, when he was jailed for criticizing the corruption and shoddy construction that caused the deaths of 5,000 children when schools collapsed in the 2008 Sichuan earthquake.

Scientists have long thought some of the carnage from the 2012 hurricane might be attributable to a warming climate. New research calculates the additional flooding due to rising sea levels.

Heat-related illnesses have sent hundreds of people to the ER across the region as temperatures hit unprecedented highs. British Columbia reported about 100 excess deaths from Friday to Monday.

Afghan military officials say the U.S. left in secret and turned the electricity off on the way out. The Pentagon pushed back. It's yet another mishap in the rocky U.S. withdrawal from Afghanistan.