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    On This Day: July 25, 1984 – Svetlana Savitskaya first woman to perform a spacewalk

    On This Day: July 25, 1984 – Svetlana Savitskaya first woman to perform a spacewalk

    On July 25, 1984, former Russian aviator and cosmonaut Svetlana Savitskaya become the first woman to fly to space twice and the first to perform a …

  • Researchers have announced the extinction of the Key Largo tree cactus in Florida, marking the first U.S. species loss due to rising sea levels. Discovered in 1992, this rare cactus existed only in the Florida Keys. Decades of monitoring showed its decline due to saltwater intrusion, soil erosion from storms, and mammal activity. By 2021, the population had dropped from around 150 to just six, prompting researchers to relocate them for off-site cultivation in a last-ditch effort to save the species.

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    Florida Cactus Species Becomes First US Extinction Victim of Rising Seas

    Florida Cactus Species Becomes First US Extinction Victim of Rising Seas

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    ScienceAlert - Science Alert

    A rare species of tree cactus has gone extinct in Florida, in what is believed to be the first species lost to sea level rise in the United States, …

  • Astronomers have discovered evidence of a long-sought intermediate-mass black hole, weighing in at at least 8,200 Suns, right here in the Milky Way galaxy at the center of Omega Centauri, a densely packed cluster of stars 17,000 light-years away. Intermediate-mass black holes, or IMBHs, are a rare breed, falling in a mass range of roughly 100 to 1 million solar masses.

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    Rare, Missing Link Black Hole Found Lurking in The Milky Way

    Rare, Missing Link Black Hole Found Lurking in The Milky Way

    One of the most sought-after objects in the Universe has just been detected right here in the Milky Way galaxy. At the center of a tightly packed, …

  • Earth's population will peak in the mid-2080s at around 10.3 billion people, then drop slightly to a level much lower than anticipated a decade ago, the United Nations said.

    The current population of 8.2 billion people will rise to that maximum over the next 60 years, then dip to 10.2 billion by the end of the century, says a report released Thursday entitled "World Population Prospects 2024".

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    World's Population to Hit Peak in 60 Years Then Fall, Researchers Say

    World's Population to Hit Peak in 60 Years Then Fall, Researchers Say

    Earth's population will peak in the mid-2080s at around 10.3 billion people, then drop slightly to a level much lower than anticipated a decade ago, …