Prehistoric rhinos lived in super-herds
Peer-Reviewed Publication
Updates every hour. Last Updated: 8-Sep-2025 04:11 ET (8-Sep-2025 08:11 GMT/UTC)
Rhinos that flourished across much of North America 12 million years ago gathered in huge herds, according to a new study by the University of Cincinnati.
Mineral deposits in limestone caves show that the now arid interior of Saudi Arabia repeatedly experienced increased rainfall over the last eight million years. An international team of researchers led by the Max Planck Institute for Chemistry in Mainz supported by the Saudi Heritage Commission, Ministry of Culture, reconstructed the climate of the Saharo-Arabian Desert using isotope analysis of stalagmites. They conclude that the vast desert belt between Africa and Eurasia was not always an impermeable barrier for humans and animals.
Researchers analyzed trade-related risks to energy security across 1,092 scenarios for cutting carbon emissions by 2060. They found that swapping out dependence on imported fossil fuels for increased dependence on critical minerals for clean energy would improve security for most nations – including the U.S., if it cultivates new trade partners.
Wildfire victims have a range of needs, including mental health support and information about wildfire smoke, according to a UC Davis study.