Changes in gene activity can link past experience with future behavior
A new study on competition in the wild was performed with tree swallows.
April 12, 2021
Fighting among social animals is common as they compete for the resources they need to survive and reproduce. A winner and a loser will inevitably result from these interactions, but do these challenges also leave an unseen, lasting mark?
From past work, scientists know that competition changes gene activity in the brain and can even increase aggression, seemingly preparing an individual for future fights. But how does a social challenge continue to affect an individual well after the interaction has ended? No prior experiments have tested how this unfolds among wild animals, and females remain conspicuously absent from studies of competition.
As vaccinations increase, maintaining COVID-curbing behaviour is going to get more complicated
Clear health guidelines tailored to vaccinated people could help maintain the social norms around important public-health behaviour, writes Brooke Struck.
Social Sharing
Brooke Struck · for CBC News Opinion ·
Posted: Apr 09, 2021 4:00 AM ET | Last Updated: April 9
As more of the Canadian population is vaccinated, it could have an impact on the social norms that have helped protect people over the past year, writes Brooke Struck.(Paul Chiasson/The Canadian Press)
Particles called muons behave in a way not predicted by scientists best theory
The Muon g-2 ring sits amid electronic racks, the muon beamline and other equipment.
April 9, 2021
The first results from the Muon g-2 experiment at the U.S. Department of Energy s Fermi National Accelerator Laboratory show fundamental particles called muons behaving in a way that is not predicted by scientists best theory, the Standard Model of particle physics. The results are published in the journal
The strong evidence that muons deviate from the Standard Model calculation might hint at exciting new physics. One potential explanation is the existence of undiscovered particles or forces. Muons act as a window into the subatomic world and could be interacting with these particles or forces.
The U.S. National Science Foundation propels the nation forward by advancing fundamental research in all fields of science and engineering. NSF supports research and people by providing facilities, instruments and funding to support their ingenuity and sustain the U.S. as a global leader in research and innovation. With a fiscal year 2021 budget of $8.5 billion, NSF funds reach all 50 states through grants to nearly 2,000 colleges, universities and institutions. Each year, NSF receives more than 40,000 competitive proposals and makes about 11,000 new awards. Those awards include support for cooperative research with industry, Arctic and Antarctic research and operations, and U.S. participation in international scientific efforts.
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