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AI carbon footprint

 From Nature Nov 2025  sustainability  The rapidly increasing demand for generative artificial intelligence (AI) models requires extensive server installation with sustainability implications in terms of the compound energy–water–climate impacts. Here we show that the deployment of AI servers across the United States could generate an annual water footprint ranging from 731 to 1,125 million m3 and additional annual carbon emissions from 24 to 44 Mt CO2-equivalent between 2024 and 2030, depending on the scale of expansion. Other factors, such as industry efficiency initiatives, grid decarbonization rates and the spatial distribution of server locations within the United States, drive deep uncertainties in the estimated water and carbon footprints. We show that the AI server industry is unlikely to meet its net-zero aspirations by 2030 without substantial reliance on highly uncertain carbon offset and water restoration mechanisms. Although best practices may reduce emission...

Chang'e 7 嫦娥七號

 四合一 Hopper Drill and other scientific instruments  嫦娥七號的「著巡飛組合」抵達月球南極後,巡視器、飛躍器將展開各種探測和找水工作。媒體報道認為,中國有望成為首個在月球找到水的國家。   資料顯示,嫦娥七號的軌道器、着陸器和巡視器,能持續工作8年,飛躍器則預計工作6個月。剛才提到飛躍器是找水的「撒手鐧」,所以好消息或不用太久便能傳來。 ILO-C telescope from HKU 10/4/2026 探測器已運抵文昌 cctv 24/4 cctv13   update Launch date Aug 2026 ( 8 Aug is major standstill) Weibo Headlines talk

HAC125 updated

Bilibili Most welcome  Now called as HAC125DX

Acuter newtony 130 DIY

Using "ring and tube" design Hyperbolic lightweight mirror 

Hokoon new 0.7m telescope

700mm f/8 RC Officina Stellare LaClefdesetoiles The New Era: 0.7m Robotic Observatory On March 1, 2026, the historic 0.5m DFM telescope was decommissioned to make way for the next genera tion of astronomical tools. The Facility: 0.7m Officina Stellare Ritchey-Chrétien Reflector. The Technology: A fully robotic and remote-controllable system.

Askar UF300

 Now in prototype phase 22KG Price 2x,xxx USD

Water hardness in Taiwan

  Hard water for good coffee?

Seestar S50 first trials at XinLong 興隆

Location: 興隆萬象(遙控)天文台 該天文台位於承德興隆觀測基地周邊,該基地的官方地理座標為:     北緯 (N):40° 23' 36"     東經 (E):117° 34' 30" (或 117° 34.5') Bortle 3 to 4 Familystar 小紅書 Google map Day 1 Raw, unprocessed  Day 2

Microsoft open source early DOS code

To commemorate 45th anniversary of DOS fanfold printout fyom Tim Paterson    Redmondmag Blog on the adventure. It's like archeology in computer era ;) Twitter   GitHub  

天問三號載荷

  轨道器将搭载3台合作载荷,分别为:国际空间研究委员会探索工作组牵头研制的火星PEX光谱仪,用于开展火星生命痕迹探寻及表面矿物成分探测;澳门科技大学牵头研制的火星分子离子成分分析仪,用于开展火星大气逃逸过程探测; 香港中文大学牵头研制的激光外差光谱仪,用于开展火星大气水同位素廓线分布及火星风场探测。 服务器将搭载香港大学牵头研制的火星地物高光谱成像仪,用于开展生命痕迹、含水矿物及资源普查等探测。 着陆器将搭载意大利国家核物理研究院-弗拉斯卡蒂国家实验室牵头研制的激光角反射器阵列,用于在火星表面布设精确基准点。 据悉,中国行星探测工程天问三号任务,计划于2028年前后实施发射,2031年前后携带火星样品返回地球。 微訊 Cuhk Cpr cuhk MUST Wenweipo Baike

2026北京機器人半馬

 今年的新聞報導,懶得mention portable battery 樽頸(kwh/kg)的問題 Sina 高密度电池和整机电池管理技术的飞跃,支撑机器人的续航距离从5公里大幅提升至10公里以上。 i.e. 最少要換電1-2次。 2026北京亦庄人形机器人半程马拉松今日落幕,荣耀齐天大圣队的人形机器人“闪电”以50分26秒(净用时)的成绩,成为本场机器人马拉松的冠军,打破人类半程马拉松世界纪录的56分42秒。此外,荣耀雷霆闪电队和星火燎原队的“闪电”机器人分别以50分56秒和53分01秒,分别位列第二、第三名。 The Sun Kyodonews

2025北京機械人半馬

  此次比賽由「天工Ultra」以2小時40分42秒奪冠。天工機器人CEO熊友軍表示,今天測試到機器人的長距離穩定奔跑以及運行技術的可靠性和穩定性,下一步會持續迭代機器人的運動控制能力及上半身的操作能力,讓機器人走入生活,協助解決日常生活問題,甚至是代替、輔助人類在危險的場景工作。不過,他也提到機器人參加馬拉松,仍有些待解決的問題,包括中途需要更換幾次電池,電池續航能力還要再增強。 Bnext tw

全球夜間人造光亮度 8年增加16%

  Sciencenet cn

Impact of hundred year change of ENSO to demise of ming dynasty

Precipitation change  The demise of the Ming Dynasty (1368–1644) and the rise of the Qing Dynasty (1644–1912) marked an epochal moment in Chinese and world history. Attention has been given to the North China droughts during 1627–1643 that destabilized the Ming Dynasty. However, there is little attention paid to how climate influenced the rise of a minority Manchu state in Northeast China and its conquest of the Ming. Here, we find that contrasting climate conditions between North and Northeast China persisted over a six-decade period (1581–1644), which diversely affected economic, societal, and political changes at the regional level. Five successive megadroughts ravaged North China, while relatively wet and mild climate conditions prevailed in the Manchu homeland of Northeast China. Furthermore, in the early decades of Manchu rule in North China (1645–1680), increased precipitation facilitated the Qing Dynasty’s consolidation. Reconstructions and climate model simulations reveale...

Lee kuan yew on muslim and iran

  Speech from Gov sg Not sure if this video is real Statesman archive  

HKisland distillery

Founder: Tiga chan @tigachan41 @hkisland.distillery Single malt whiskey  黃金諾言 golden promise 大麥 Now tv  FB Islaywhiskyexp

Redwire spaceflight camera

  Argus  vision system. (Light) Weight, (low) power and (high) reliability as top priorities  TESTING + Radiation TID: 10 krad (200MeV p*) + Radiation SEU: 0.049 um^2 3-σ Cross-Section + Random Vibration: 24 Grms. When comparing with those Nikon cameras the Artemis astronauts, you can see the redwire argus  requirements are in the different league.   Petapixel Another Petapixel. Ergonomics, familiarity, and a optical viewfinder matters more. D700 in 2025

世衞十大垃圾食物 WHO junk food list

 已澄清為謠言 On January 12, 2018, a media communication meeting on the scientific interpretation of food safety hotspots was held in Beijing, organized by the Chinese Food Science and Technology Association with the guidance of the National Food and Drug Administration and the Chinese Association of Science and Technology, and co-sponsored by China Economic Network. World Health Organization (WHO) Food Safety Department Director Peter Ben Embarek, through video, clarified the rumor about "junk food" that consumers are highly concerned about. He stated that the World Health Organization (WHO) has never released a list titled "Top Ten Junk Foods." He emphasized that not all processed foods or fast food should be considered "junk food," as some processed foods that provide nutrition and convenience are also part of modern balanced diets. 2018年1月12日,由国家食品药品监督管理总局、中国科学技术协会指导,中国食品科学技术学会主办,中国经济网协办的2017年食品安全热点科学解读媒体沟通会在京举行。世界卫生组织(WHO)食品安全部主任彼得·本·恩巴瑞克(Peter Ben Embarek)...

儒道佛,基督教雜談

  微信 Thevoicehk

父母正在變老,和他們做這30件事情

  Twitter  

雨水節氣

  冰雪融化,降雨量增加,土地濕潤。 雨水时节,西北东北等地仍是寒冬,但更多地方已能感受到春的气息:春风化雨,草木萌动。  “东风解冻,散而为雨”。“雨水”二字便由此而来。  CCTV 或者改叫溶雪,解凍,春雨等較適合。

Ancient northeast asians

  Wiki Pannonian avars Rouran khanate 柔然 汗國 500CE Migration from DNA Ancient genomes reveal origin and rapid trans-Eurasian migration of 7th century Avar elites.  Cell April 2022 Sex and marriage patterns in an ancient empire revealed by DNA  CNN Reference  Koraina 魏書 蠕蠕傳 ctext Reddit 

Hyperspectral satellite

  Scott Manley:

風雲3衛星

  Guancha

風雲4號C

距离地球36000公里的赤道上空 4路Ka对地数传通道,每路最高可支持2.4Gbps的传输速率 7种转发通道 DCP数字采样通道,通过数字采样与合成技术,大幅提升了通道的抗干扰能力 風雲4号C星配置6台遥感仪器,其中先进的静止轨道辐射成像仪(AGRI)、干涉式大气垂直探测仪(GIIRS)、闪电成像仪(LMI)为升级换代,太阳极紫外成像仪(SUVI)、多波段电离层紫外光谱成像仪(MUSI)、太阳X-EUV流量计(SXUS)3台全新研制。 FY-4C星相较FY-4B星主要性能提升: 先进的静止轨道辐射成像仪全圆盘由15分钟提升到10分钟,国际首次实现500m真彩色,250m全色的全圆盘探测能力 干涉式大气垂直探测仪空间分辨率提升到8km,时间分辨率提升至1小时,光谱精度由7ppm提升到5ppm,辐射精度由0.7K提升至0.5K 实现全圆盘闪电探测,新增太阳成像和电离层成像观测能力 新增电推进、太阳跟踪、双路Ka数传等,实现高精度控制定位和长寿命稳定业务服务能力 风云四号数据广播系统采用DVB/S2体制广播数据,国内外用户主要用7.3米天线接收其广播的HRIT-H 12 Mbps数据、HRIT-V1 10 Mbps数据,用2.4~3米天线接收HRIT-V2 1 Mbps数据。 Reference  CNSA NSMC Huijiwiki Gunter

Seestar S50 vs S30 S30 pro FOV

Just too many misconceptions, out there in YouTube FB and Facebooks, like Sensor resolution is the same(S30 vs S30 pro)> No Field is 4 times bigger> does not mean better. More pixels mean sharper image > No. It depends on resolution. 3.99 vs 3.74 arcsec / pixel ( s30 vs s30 pro), and s50 is 2.39 / pixel Below are Field of view (FoV) on different common Messier objects Smallest rectangle is S50, middle one is S30, biggest rectangle is S30 pro. M31 Andromeda galaxy: M8: Veil Nebula: Lagoon nebula: Orion nebula: Leo triplets  Most reviews only mentioned the Pros and seldom any cons of the S30 pro.  Eg.  Most Messier objects occupy a smaller area,ook smaller on S30 pro Softness of the image(S30 pro vs S30) 4 times longer AI denoise processing time ( S30 pro vs S30) So, are you willing to pay $200 more for the pro($549 list price) version because of the (secondary) wide angle camera? Actually you easily do it with a astromidded DSLR and a tracker mount instead. Refere...