Scientists have found evidence that the Asian continent was free of permafrost all the way to its northerly coast with the Arctic Ocean when Earth’s average temperature was 4.5˚ C warmer than today, suggesting that the whole Northern Hemisphere would have also been free of permafrost at the time.
articles
Gene Therapy Restored Hearing in Deaf Patients
Gene therapy can improve hearing in children and adults with congenital deafness or severe hearing impairment, a new study involving researchers at Karolinska Institutet reports.
Southern Ocean Saltier, Hotter and Losing Ice Fast as Decades-Long Trend Unexpectedly Reverses
Researchers have discovered a dramatic and unexpected shift in the Southern Ocean, with surface water salinity rising and sea ice in steep decline.
Exposure to Air Pollution May Cause Heart Damage
Researchers using cardiac MRI have found that long-term exposure to air pollution is associated with early signs of heart damage, according to a study published in Radiology.
London Inches Closer to Running Transit System Entirely on Renewable Power
Under a new agreement, London will source enough solar power to run its light railway and tram networks entirely on renewable energy.
Flooding Along the Uruguay and Ibicuí Rivers
On June 18, 2025, torrential rains hit the state of Rio Grande do Sul in southern Brazil.