Why is the Pacific Ocean so big?
Look at any world map and you'll see that the Pacific is the largest ocean. But how did it get so big?
Planet Earth
Scientists discover strong, unexpected link between Earth's magnetic field and oxygen levels
Earth's magnetic field and oxygen levels have increased more or less in parallel over the past 540 million years, suggesting the two factors are linked in some way, researchers say.
Groundwater in the Colorado River basin won't run out — but eventually we won’t be able to get at it, scientists warn
The Colorado River basin has lost a Lake Mead’s worth of water in the last 20 years — and scientists say we’re passing a "critical point" where pumping groundwater will become too expensive.
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Health
Science news this week: Overdue earthquakes and star-shaped brain cells
June 14, 2025: Our weekly roundup of the latest science in the news, as well as a few fascinating articles to keep you entertained over the weekend.
Animals
Instead of 'de-extincting' dire wolves, scientists should use gene editing to protect living, endangered species
Opinion A legal scholar with a doctorate in wildlife genetics explains the promise biotechnology techniques hold for some animals that are currently endangered.
Human Behavior
Strikingly simple 'dial' in the brain may help it distinguish imagination from reality
Activity levels in a specific region of the brain predict whether we think something is real, irrespective of whether we've seen it or imagined it.
Physics & Mathematics
'Alien's language' problem that stumped mathematicians for decades may finally be close to a solution
The Inter-universal Teichmüller Theory, an infamous proof that has confounded mathematicians for over a decade, has been partially solved.
Chemistry
Scientists create ultra-tough copper alloy that is stronger than steel and can withstand temperatures of 1500 F
The new super-strong copper alloy can be used to build better airplanes and spacecraft.
Technology
Best microscopes for students 2025
Discover a microscopic world with one of the best microscopes for students and young scientists, without emptying your wallet.
