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Mars Ingenuity helicopter completes its toughest flight yet

Summer swelter trend: West gets hotter days, East hot nights

Here’s how to design drug trials to defeat the next pandemic

Unprecedented heat, hundreds dead: Climate change is frying the Northern Hemisphere

Does spinach make you strong? Ask Popeye — and science

Keep watching the skies: Asteroid Day is here

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Montgomery Co. plan would achieve net zero emissions 10 years earlier than state goals

For 2nd year in a row, smaller summer dead zone predicted for Chesapeake Bay

Montgomery County releases 86-step climate action plan

Pandemic blamed for largest drop in US life expectancy since World War II

National Geographic says the world has a fifth ocean

Infectious disease expert clears up ‘doom-based’ messaging surrounding coronavirus delta variant

How mRNA technology is altering vaccine treatments

New fossils reveal one of the largest land mammals ever found

How to watch the full ‘strawberry’ moon, the last supermoon of 2021

Free fertilizer: After short life above ground, 17-year cicadas dying, rotting quickly

Scientists still puzzling over deaths of birds in DC area

Scientists say 90% of open-ocean sharks died in mystery extinction event

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June 10

PHOTOS: ‘Ring of fire’ seen as annular eclipse dazzles DC region

Anacostia River continues to improve — but don’t jump in

Animal survives after 24,000 years frozen in Siberian permafrost

How to watch the ‘Ring of Fire’ solar eclipse around the DC area

Study: More screen time during pandemic led to eye problems in children

Hurricane season is expected to be above average — and so are the forecasts