研究显示，在强烈路灯照射下的树木，其落叶时间比正常树木晚2-3周，这会使它们更容易遭受早霜冻害。因此，在城市规划中考虑植物的夜间需求，正在成为生态建设的新课题。在更深层的生物学层面，植物的夜间活动与基因表达密切相关。科学家通过转录组分析发现，植物基因组中有超过三分之一的基因表达呈现昼夜波动，这些"时钟基因"构成了复杂的调控网络，如同一个精密的生物计时器，指挥着各种生理过程的时序安排。这个内在计时器 ...

Iceland has no shortage of natural dangers – volcanic eruptions, glacial floods, scaldingly hot springs and bitterly cold winters. But it is at least one of the few places on Earth where humans don't ...

海归学者发起的公益学术平台分享信息，整合资源交流学术，偶尔风月想象有一类“反着来”的发光分子：它们的激发单重态能级比三重态要低（能隙反转），等于把常见的洪特规则倒过来。这样一来，本来难利用的三重态激子就能更轻松地“爬回”单重态（利用反向系间窜越过程） ...

For many rural households in northern China, burning coal has long been the primary way to stay warm in winter, but it has also caused heavy air pollution and frequent safety hazards such as carbon ...

In a factory area that is not as bustling as the city, I witnessed a young person gradually turning "possibility" into "result" - her name is Yang Jing. 她从车间出来，安全帽戴得端正，工装干净整齐。开口利落，带着章丘人特有的 r/l 小口音，把 ...

A set of key indicators released Friday by the National Bureau of Statistics (NBS) reflected continued economic momentum. The ...

Why is Antarctic wildlife being 'sunburnt'?They found evidence of Antarctic plants putting more effort into synthesising protective sunscreen compounds and krill, marine crustaceans that are the ...