businessinsider.com – According to a new study, Earth's magnetic poles flipped 42,000 years ago, triggering dramatic changes in temperatures and radiation levels.
Source: Alan Cooper, et al. A global environmental crisis 42,000 years ago. Science, 2021.
arstechnica.com – Another predicted impact of climate change may be here.
Source: L. Caesar, G. D. McCarthy, D. J. R. Thornalley, N. Cahill, S. Rahmstorf. Current Atlantic Meridional Overturning Circulation weakest in last millennium. Nature Geoscience, 2021.
newscientist.com – Fossil hunters struggle to find evidence of medium-sized carnivorous dinosaur species – perhaps because juvenile forms of giants like T. rex outcompeted them
Source: Katlin Schroeder, S. Kathleen Lyons, Felisa A. Smith. The influence of juvenile dinosaurs on community structure and diversity. Science, 2021.
npr.org – Scientists have found that two-way communication is possible with someone who is asleep and dreaming. Specifically, lucid dreaming — dreaming while being aware you're dreaming.
Source: Karen R. Konkoly, et al. Real-time dialogue between experimenters and dreamers during REM sleep. Current Biology, 2021.
eurekalert.org – Evolutionary expert Charles Darwin and others recognized a close evolutionary relationship between humans, chimps and gorillas based on their shared anatomies, raising some big questions: how are humans related to other primates, and exactly how did early humans move around? Research by a Texas A&M University professor may provide some answers.
Source: Thomas C. Prang, Kristen Ramirez, Mark Grabowski, Scott A. Williams. Ardipithecus hand provides evidence that humans and chimpanzees evolved from an ancestor with suspensory adaptations. Science Advances, 2021.
wired.com – The oldest DNA ever sequenced shows how the genus split off into new species.
Source: Tom van der Valk, et al. Million-year-old DNA sheds light on the genomic history of mammoths. Nature, 2021.
livescience.com – The first black hole ever discovered just put on a lot of mass, and it has astronomers confused.
Source: James C. A. Miller-Jones, et al. Cygnus X-1 contains a 21–solar mass black hole—Implications for massive star winds. Science, 2021.
newscientist.com – The oldest confirmed dog remains found in North America support the idea that the first Americans – and their dogs – travelled along the Pacific coast
Source: Flavio Augusto da Silva Coelho, Stephanie Gill, Crystal M. Tomlin, Timothy H. Heaton, Charlotte Lindqvist. An early dog from southeast Alaska supports a coastal route for the first dog migration into the Americas. Proceedings of the Royal Society B: Biological Sciences, 2021.
wired.com – Two new studies are being hailed as proof that vaccinated people can doff masks and pod-hop worry-free. But not so fast.
Source: Noa Dagan, et al. BNT162b2 mRNA Covid-19 Vaccine in a Nationwide Mass Vaccination Setting. New England Journal of Medicine, 2021.
arstechnica.com – Provides evidence that tidal disruption events can also be cosmic particle accelerators.
Source: Robert Stein, et al. A tidal disruption event coincident with a high-energy neutrino. Nature Astronomy, 2021.