云霄塔（Skylon）空天飞机及 SABRE 发动机设计综述
https://www.zhihu.com/question/1917736350922277315/answer/1919628155645334724
https://www.zhihu.com/question/1917736350922277315/answer/1919628155645334724
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Forwarded from Solidot
气候变暖将显著影响粮食产量
2025-06-23 00:06 by 巨龙之夜
根据发表于《自然》的全球作物产量分析，到本世纪末，每变暖 1℃，人均可用粮食每天将减少约121千卡。研究论文作者、美国伊利诺伊大学厄巴纳-香槟分校的 Andrew Hultgren 说，根据目前轨迹，在 3℃ 的变暖情景下，“这相当于每个人都不再用早餐”。Hultgren 和同事收集了世界上六大主粮作物的产量数据。这些作物提供了全球人类所需热量的 2/3 以上。他们发现，对于除水稻外的所有作物，高温会造成巨大的损失，因为水稻在更暖的夜晚生长得更好。根据预测，到本世纪末，全球变暖情况下玉米产量比没有全球变暖的情况下降 12% 或28%，具体下降程度取决于温室气体排放量是适中还是非常高。如果农民不采取措施适应气候变化，那么在本世纪末变暖程度高的情景下，作物损失将增加约1 /3。不过，研究人员指出，即便采取了上述农业适应措施，也不太可能弥补气候变化造成的巨大作物损失。
doi.org/10.1038/s41586-025-09085-w
中国科学报：气候变暖3℃，每个人都将减少一顿早餐
#地球
2025-06-23 00:06 by 巨龙之夜
根据发表于《自然》的全球作物产量分析，到本世纪末，每变暖 1℃，人均可用粮食每天将减少约121千卡。研究论文作者、美国伊利诺伊大学厄巴纳-香槟分校的 Andrew Hultgren 说，根据目前轨迹，在 3℃ 的变暖情景下，“这相当于每个人都不再用早餐”。Hultgren 和同事收集了世界上六大主粮作物的产量数据。这些作物提供了全球人类所需热量的 2/3 以上。他们发现，对于除水稻外的所有作物，高温会造成巨大的损失，因为水稻在更暖的夜晚生长得更好。根据预测，到本世纪末，全球变暖情况下玉米产量比没有全球变暖的情况下降 12% 或28%，具体下降程度取决于温室气体排放量是适中还是非常高。如果农民不采取措施适应气候变化，那么在本世纪末变暖程度高的情景下，作物损失将增加约1 /3。不过，研究人员指出，即便采取了上述农业适应措施，也不太可能弥补气候变化造成的巨大作物损失。
doi.org/10.1038/s41586-025-09085-w
中国科学报：气候变暖3℃，每个人都将减少一顿早餐
#地球
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Forwarded from Lobste.rs
大模型的 Loss Landscape 是什么样的？
https://zhuanlan.zhihu.com/p/1920616505151845374
https://zhuanlan.zhihu.com/p/1920616505151845374
👀5
Forwarded from Hacker News
First methane-powered sea spiders found crawling on the ocean floor (❄️ Score: 150+ in 3 days)
Link: https://readhacker.news/s/6wuvx
Comments: https://readhacker.news/c/6wuvx
Link: https://readhacker.news/s/6wuvx
Comments: https://readhacker.news/c/6wuvx
CNN
First methane-powered sea spiders found crawling on the ocean floor
Scientists on the US West Coast say they discovered three previously unknown species of deep-sea spider that could have a rare diet fueled by a common greenhouse gas.
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Hacker News
First methane-powered sea spiders found crawling on the ocean floor (❄️ Score: 150+ in 3 days) Link: https://readhacker.news/s/6wuvx Comments: https://readhacker.news/c/6wuvx
看标题：First methane-powered
-> 好的应该又是新能源什么东西
-> 什么叫甲烷动力海蜘蛛？？
-> 好的应该又是新能源什么东西
-> 什么叫甲烷动力海蜘蛛？？
👾8🥰2
Hacker News
First methane-powered sea spiders found crawling on the ocean floor (❄️ Score: 150+ in 3 days) Link: https://readhacker.news/s/6wuvx Comments: https://readhacker.news/c/6wuvx
PNAS
Methane-powered sea spiders: Diverse, epibiotic methanotrophs serve as a source of nutrition for deep-sea methane seep Sericosura
Methane seeps harbor uncharacterized animal–microbe symbioses with unique nutritional strategies. Three undescribed sea spider species (family Ammo...
NetArrow / ねたろう:
(1/2)燃え上がってますね #茅森月歌生誕祭2025
https://twitter.com/netarrow_A/status/1937163747174547615
(1/2)燃え上がってますね #茅森月歌生誕祭2025
https://twitter.com/netarrow_A/status/1937163747174547615
🥰11❤1
I'm starting with the man in the middle
I'm asking him to change his ways
For all packets as he tampers in the relay
If you want your traffic in a safer space
Check the certs, pin the keys, and then rotate
I'm asking him to change his ways
For all packets as he tampers in the relay
If you want your traffic in a safer space
Check the certs, pin the keys, and then rotate
Forwarded from Hacker News
PNG Is Back (🔥 Score: 157+ in 2 hours)
Link: https://readhacker.news/s/6wFJ2
Comments: https://readhacker.news/c/6wFJ2
Link: https://readhacker.news/s/6wFJ2
Comments: https://readhacker.news/c/6wFJ2
www.programmax.net
PNG is back!
After 20 years, PNG is back with renewed vigor! A new PNG spec was just released.
生成式 AI 最新力作：给定射频频带特性，通过扩散模型生成具有特性的电路形状
https://fixupx.com/vikramskr/status/1937658826414784589
https://fixupx.com/vikramskr/status/1937658826414784589
🧵 Thread • FixupX
Vikram Sekar (@vikramskr)
Generative AI meets RF circuit design = game changer
• Passive networks tailored by diffusion models.
• Specify stop-band/pass-band; AI does the rest.
• Pixel patterns are not intuitive to electrical response.
Designs getting more abstract.
Prepare for…
• Passive networks tailored by diffusion models.
• Specify stop-band/pass-band; AI does the rest.
• Pixel patterns are not intuitive to electrical response.
Designs getting more abstract.
Prepare for…
🤯23⚡3🥴2🤔1