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作者:Ryan, Casey M.; Staver, A. Carla
作者单位:University of Edinburgh; Yale University
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作者:Liu, Gang; Shen, Lu; Ciais, Philippe; Lin, Xin; Hauglustaine, Didier; Lan, Xin; Turner, Alexander J.; Xi, Yi; Zhu, Yu; Peng, Shushi
作者单位:Peking University; Peking University; Peking University; CEA; Universite Paris Saclay; University of Colorado System; University of Colorado Boulder; National Oceanic Atmospheric Admin (NOAA) - USA; University of Washington; University of Washington Seattle
摘要:Methane is an important greenhouse gas1 and its atmospheric concentration has almost tripled since pre-industrial times2, 3-4. Atmospheric methane mixing ratios vary seasonally, with the seasonal cycle amplitude (SCA) having decreased in northern high latitudes and increased in the subtropics and tropics since the 1980s5,6. These opposing SCA trends can help understanding of long-term changes in the global methane budget, as methane emissions and sinks have opposing effects on the SCA5. Howeve...
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作者:Sangalang, Cindy C.
作者单位:University of California System; University of California Los Angeles
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作者:Ducoli, Luca; Zarnegar, Brian J.; Porter, Douglas F.; Meyers, Robin M.; Miao, Weili; Riley, Nicholas M.; Srinivasan, Suhas; Jackrazi, Leandra V.; Yang, Yen-Yu; Li, Zhouxian; Wang, Yinsheng; Bertozzi, Carolyn R.; Flynn, Ryan A.; Khavari, Paul A.
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作者:Biever, Celeste
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作者:Cebola, Tavares
摘要:Cesaria Huo is collecting bat vocalizations to understand how the sounds they make evolve.
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作者:Murphy, Brian T.
作者单位:University of Illinois System; University of Illinois Chicago; University of Illinois Chicago Hospital
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作者:Sinha, Avik; Wu, Jing; Sheraz, Muhammad; Qin, Quande
作者单位:Xi'an Jiaotong-Liverpool University; Shenzhen University
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作者:Kasdin, Jonathan; Duffy, Alison; Nadler, Nathan; Raha, Arnav; Fairhall, Adrienne L.; Stachenfeld, Kimberly L.; Gadagkar, Vikram
作者单位:Columbia University; University of Washington; University of Washington Seattle; Alphabet Inc.; DeepMind
摘要:Many natural motor skills, such as speaking or locomotion, are acquired through a process of trial-and-error learning over the course of development. It has long been hypothesized, motivated by observations in artificial learning experiments, that dopamine has a crucial role in this process. Dopamine in the basal ganglia is thought to guide reward-based trial-and-error learning by encoding reward prediction errors1, decreasing after worse-than-predicted reward outcomes and increasing after bet...
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作者:Leeming, Jack
摘要:The winners of Nature's 2025 photo competition braved crashing waves and misty mountains to capture their science.