Crédito:Pixabay Um estudo recente da NASA mostra que o Sol tem se tornado mais ativo desde 2008. Embora a atividade solar normalmente siga ciclos de 11 anos, ela também passa por mudanças de longo prazo que podem durar décadas. Por exemplo, a atividade solar vinha diminuindo constantemente desde a década de 1980, atingindo um nível...
Crédito:Pixabay A privação de sono torna quase impossível permanecer acordado e se concentrar. Um novo estudo com moscas-das-frutas pode ter descoberto a origem celular desse desligamento biológico, oferecendo insights mais profundos sobre por que precisamos descansar. Cientistas da Universidade de Oxford identificaram as mitocôndrias, estruturas produtoras de energia em nossas células, como peças-chave na sinalização...
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