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On average, a day on Earth is about 86,400 seconds long, or 24 hours. But this can vary due to a number of things, including the positions of the sun and moon and changes to Earth's magnetic field.
On July 9, July 22 and Aug. 5, the moon will be at its farthest distance from Earth's equator, which changes the impact of its gravitational pull on the planet's axis. With the moon closer to the poles, Earth's spin speeds up, making our day shorter than usual — but only by about 1.5 milliseconds.
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Much more noticeable this week were the devastating flash floods in Texas, New Mexico, North Carolina and Illinois, which have left at least 130 dead.
Moas were hunted to extinction around 600 years ago, but now, scientists want to bring them back.
(Image credit: Florilegius/Universal Images Group via Getty Images)
After years of analysis and observation, scientists have identified a new blood group, called Gwada negative, that has so far only been identified in only one person on the planet.
After making headlines for claiming to have brought dire wolves back from extinction earlier this year, biotechnology company Colossal Biosciences has sparked a new wave of controversy with its latest "de-extinction" project: bringing back the giant moa (Dinornis robustus.)
The giant moa was a large flightless bird native to New Zealand that is thought to have gone extinct due to hunting by humans roughly 600 years ago. The company claims that "resurrecting" these giant birds could bring benefits to endangered animals alive today, but the announcement has drawn criticism from many others in the scientific community.
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On average, human males tend to be about 5 inches (13 centimeters) taller than females. However, this size difference isn't consistent across the animal kingdom, with females often outsizing males. So, why are human men typically bigger than women?
Baihetan Dam is a huge hydroelectric operation in China.
(Image credit: VCG/VCG via Getty Images)
Since 1835, thousands of dams have been built around the world to control water supplies and, in some cases, generate electricity. Some of these larger dams hold so much water that they have actually redistributed mass around the world.
Now, scientists have found that this mass redistribution has shifted the position of Earth's crust relative to its mantle and, in turn, affected the position of our planet's poles.
A sugarcane cutter toils in scorching heat in Western Maharashtra.
(Image credit: Sanket Jain)
Between March and May, as temperatures climbed above 95 degrees Fahrenheit (35 degrees Celsius) in parts of India, community health care workers reported an increase in the number of patients coming in with persistent confusion, weakness and seizures. Outdoor workers were collapsing, with new cases reported every day.
But the uptick was not the result of a new virus or bacterial infection — rather, these incidents were caused by a dangerous electrolyte imbalance.
Hyponatremia is a condition in which the sodium level in the blood falls too low and, if left untreated, can lead to brain swelling, seizures, coma, muscle breakdown and even death. Cases of hyponatremia often increase in the summer months. Now, experts are warning that warming global temperatures could cause incidences of hyponatremia to skyrocket.
Something for the weekend
If you're looking for something a little longer to read over the weekend, here are some of the best long reads, book excerpts and interviews published this week.
This week, the James Webb Space Telescope (JWST) revealed its latest cosmic curiosity after it spotted a strange owl-shaped object lurking 11 billion light-years from Earth.
The avian formation is thought to have taken shape due to the extremely unusual collision of two rare ring galaxies, which are formed when smaller galaxies smash straight through the middle of larger ones, kicking out the larger galaxy's stars and gas around a central core to create a ring-like shape.
Pandora is the trending news editor at Live Science. She is also a science presenter and previously worked as Senior Science and Health Reporter at Newsweek. Pandora holds a Biological Sciences degree from the University of Oxford, where she specialised in biochemistry and molecular biology.
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