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Study clarifies the effect of aging on hematopoietic stem cells By transferring mouse aged hematopoietic stem cells (aged HSCs) to the environment of young mice (bone marrow niche), it was demonstrated that the pattern of stem cell gene expression was rejuvenated to that of young hematopoietic stem cells. On the other hand, the function of aged HSCs did not recover in the young bone marrow niche. The epigenome (DNA methylation) of aged HSCs did not change significantly even in the young bone marrow niche, and DNA methylation profiles were found to be a better index than the gene expression pa...

Cosmos Briefing: Modelling Cosmos Briefing was told. Professor Jodie McVernon, from Doherty Epidemiology, and Professor Tony Blakely, from the Melbourne School of Population and Global Health, provided a comprehensive overview of their work and the broader application of epidemiological modelling during COVID-19. The session was hosted by the Lead Scientist of the Royal Institution of Australia, Professor Alan Duffy. Models can be used to reveal historical trends, simulate futures and assess situations to forecast an outcome. They can thus be geared towards management or elimination of disea...

Match against south korea, scoring three goals in the first half and a fourth in the last minutes of the game. the french team is one of the biggest favorites to win the tournament. a volcano in eastern russia that was long thought to be extinct has been showing signs of life. and if it erupts, scientists say it could threaten nearby villages. the bolshaya udina volcano on the kamchatka peninsula was considered extinct until 2017. but in just two months last year scientists recorded 559 seismic events. the lead scientist says it should now be considered active. the area near the mountain is ...

Group average. >> this is not "sister wives," honey. >> this sounds like every guy's worst nightmare. is this worth getting off the couch to see? >> it is if you have your girls and cocktails with you. if you don't have either one think twice. >> for anybody else, perhaps a gentleman, stay away. this is ladies night. >> chick flick for sure. >> i had that feeling any way. >> yeah. >> moving on our next movie is "transcendence." science fiction film starring johnny depp with rebecca hall, kate mara and morgan freeman. the plot is too complicated to explain but has to do with scientists uploadin...

Storing the gas. here to tell us about that is jeff urban, he works as a lead scientist at the berkeley lab. he has a title i will tell you as long as my arm so we'll just call jeff a super smart guy. that's your new title for today. >> fair enough. >> great to have you with us. tell us about this big breakthrough. >> yeah, this really came out of a big dilemma in the hydrogen storage community, which is how do you safely and densely hold on to a large quantity of hydrogen, something that you'd need to power a vehicle. as you mengtioned but also do a you say release the fuel when you want to o...