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China's cities are sinking below sea level, study finds

Science Alert - 3 hours 35 min ago
China's major cities experience elevation loss due to subsidence. In 100 years, a quarter of urban coastal land may be below sea level. Robert Nicholls and researchers emphasize the significance. Manoochehr Shirzaei criticizes inadequate adaptation strategies. Zurui Ao, Xiaomei Hu, and Shengli Tao led the study.

Human cases of bird flu 'an enormous concern': WHO

Science Alert - 18/04/2024
The World Health Organization voiced alarm Thursday at the growing spread of H5N1 bird flu to new species, including humans, who face an "extraordinarily high" mortality rate. But in the hundreds of cases where humans have been infected through contact with animals, "the mortality rate is extraordinarily high", Farrar said.

Nasa: Rare nova explosion this year to be a 'once-in-a-lifetime' viewing opportunity

Science Alert - 18/04/2024
A remarkable astronomical event is expected to happen this year, offering what NASA calls a 'once-in-a-lifetime viewing opportunity.' The nova explosion is set to occur in a star system situated 3,000 light years away from Earth and should be visible to the naked eye at some point in 2024. Bill Cooke discussed the phenomenon in a conversation with Fox News Digital.

How cloud seeding boosts rainfall — and why that’s controversial

Science Alert - 17/04/2024
Decades ago, humans began employing chemicals to enhance clouds' ability to produce rain and snow, a practice that is increasingly relevant as climate change exacerbates heat and dryness in certain areas. While embraced in countries like the US and the United Arab Emirates, cloud seeding remains contentious due to potential unintended outcomes such as excessive precipitation or heightened pollution levels.

Queen bumblebees surprise scientists by surviving underwater

Science Alert - 17/04/2024
Bumblebees can surprisingly withstand days underwater, according to a study published Wednesday, suggesting they could withstand increased floods brought on by climate change that threaten their winter hibernation burrows. Researchers placed 143 hibernating queen bumblebees in tubes -- some with no water as a comparative group, some floating in water and some fully submerged using a plunger for a period ranging from eight hours to seven days, according to the study published in the journal Biology Letters.

Genome study reveals prehistoric Ethiopian origins of coffee

Science Alert - 17/04/2024
Research unlocked the genome of Coffea arabica, revealing its ancient Ethiopian forest origins. Led by experts like Victor Albert and Patrick Descombes, the study emphasized the importance of disease-resistant breeding for Arabica coffee varieties.

Facing financial pressure, Nasa calls for innovative proposals to bring Mars rocks back sooner, cheaper

Science Alert - 16/04/2024
Nasa reevaluates Mars mission due to budget cuts, seeking cost-effective approach. Administrator highlights urgency for solutions. Perseverance rover collects 24 core samples at Jezero Crater. Independent review criticizes mission. China advances Mars sample return.

Nasa confirms space station debris hit Florida man's home

Science Alert - 16/04/2024
An object that crashed from the sky into an American man's home was a hunk of debris ejected from the International Space Station, Nasa confirmed Monday. Nasa, which subsequently collected the object from Otero for analysis, confirmed in a new blog post that the predictions were true.

Biggest since Big Bang: James Webb telescope unravels origin of 'BOAT'

Science Alert - 15/04/2024
The James Webb Space Telescope (JWST) has uncovered a significant finding, pinpointing the origin of the most powerful cosmic explosion since the Big Bang, dubbed the "BOAT" or "brightest of all time." This gamma-ray burst (GRB) was initially spotted on October 9, 2022, emanating from 2.4 billion light-years away in the Sagitta constellation. Scientists, through meticulous investigation, have linked the BOAT to a massive supernova resulting from the collapse of a giant star.

How Nasa plans to tackle dust challenges on the Moon and Mars

Science Alert - 15/04/2024
Nasa is confronting a major hurdle in lunar and Martian exploration: the pervasive and abrasive nature of dust. The Moon's surface, covered in jagged, glassy regolith, and Martian dust posing a threat to various equipment and astronaut health, present significant challenges. In response, Nasa researchers are working on an inventive electrodynamic dust shield (EDS) aimed at maintaining extraterrestrial conditions.

Revealed: Mysterious red dots during total solar eclipse

Science Alert - 15/04/2024
During the extraordinary total solar eclipse on April 8, 2024, spectators were treated to a breathtaking celestial phenomenon featuring striking ruby-colored prominences encircling the moon's shadow. Lisa Upton, a solar scientist in Colorado said, “There was a very impressive prominence visible during eclipse. Stunning to behold!! This was a magnificent eclipse for anyone who was fortunate enough to see totality.”

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