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Homo sapiens lived in tropical forests hundreds of thousands of years earlier than thought

New archaeological discoveries challenge the classic "savanna hypothesis," suggesting early humans thrived in tropical forests far sooner than previously assumed.

  • New evidence places Homo sapiens in tropical forests hundreds of thousands of years earlier than thought.
  • The classic savanna-only hypothesis for human origins is being seriously questioned.
  • Ecological flexibility, not a single habitat, may be the key to our species' success.

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Earth may survive the Sun's death, new study finds

Simulations published in Astronomy & Astrophysics suggest Earth could escape being swallowed when the Sun becomes a red giant — overturning the long-held consensus. Mercury and Venus won't be so lucky.

  • New simulations suggest Earth will not be swallowed when the Sun expands into a red giant.
  • Mercury and Venus face near-certain destruction; Earth's orbit may spare it.
  • The study, in Astronomy & Astrophysics, revises long-standing models of solar evolution.

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Scientists may have detected the first signature of a black hole event horizon

Gravitational waves produced by cosmic collisions may carry a distinct imprint of the event horizon — the boundary beyond which nothing can escape.

  • Researchers report the first possible observational signature of a black hole event horizon.
  • The signal emerges from analysis of gravitational waves generated by cosmic collisions.
  • Results are preliminary and require independent confirmation.

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Too many trees along farmland may harm rather than help biodiversity

Shelterbelts and hedgerows have long been seen as simple wins for nature, but new research suggests density and species mix matter just as much as planting itself.

  • Dense shelterbelts can undermine biodiversity rather than support it.
  • Species composition and planting density matter as much as the trees themselves.
  • Findings could reshape EU farmland afforestation policies if further validated.

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Humans may harbour hidden tissue-regeneration abilities, study suggests

New research proposes that the human body retains latent regenerative mechanisms capable of repairing damaged tissue — so far largely unexplored by medicine.

  • Humans may possess latent mechanisms for regenerating damaged tissue, researchers suggest.
  • The study offers a theoretical framework, not a clinical activation method.
  • Independent validation and further trials are needed before any medical application.

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Strength training extends lifespan, new study finds

Lifting weights does far more than build muscle — researchers now link resistance training to significantly longer life.

  • Strength training is now linked to longer life, not just bigger muscles.
  • Benefits include metabolic health and reduced risk of premature death.
  • Health experts recommend at least two resistance sessions per week for adults.

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Știință +3

Contact lenses that fight depression tested in mice

A team at Yonsei University developed lenses that deliver electrical signals through the retina to mood-regulating brain regions, with results matching a common antidepressant.

  • The lenses stimulate the retina electrically to influence mood-regulating brain circuits.
  • Effects observed in mice matched those of a commonly prescribed antidepressant.
  • The technology is non-invasive but remains in preclinical research stages.

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Neanderthals, a universe-old comet and coffee fuel — science of the week

Inbreeding didn't kill the Neanderthals, comet 3I/ATLAS is as old as the universe, and Max Planck's papers were mistakenly deleted by content algorithms.

  • A new study finds inbreeding was not responsible for the extinction of Neanderthals.
  • Interstellar comet 3I/ATLAS is estimated to be as old as the universe at roughly 13.8 billion years.
  • Automated algorithms mistakenly deleted Max Planck's scientific papers, raising alarms over academic archives.

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The Universe doesn't look the same in all directions. Cosmologists want to know why

The DESI instrument mapped 47 million galaxies and confirmed an anomaly that standard cosmological models struggle to explain.

  • DESI mapped 47 million galaxies and detected directional variations in matter distribution.
  • The anomaly challenges cosmic isotropy, a cornerstone of the standard ΛCDM model.
  • Possible explanations include time-varying dark energy or undiscovered large-scale cosmic structures.

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Earth's great extinctions may have been triggered from space

Scientists propose that cosmic events — not just volcanoes or asteroid impacts — may lie behind the most devastating mass extinctions in Earth's history.

  • Cosmic events — supernovae, gamma-ray bursts — may have triggered mass extinctions on Earth.
  • The end-Permian extinction, the worst on record, wiped out over 90% of all species.
  • The hypothesis complements, rather than replaces, established extinction theories.

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