- India overtakes Brazil in Covid-19 cases
- ...
- 作者：发表于：2020-09-08 14:18:50 点击：445 查阅全文...
- The risk of viral transmission
- The risk of viral transmission varies depending on setting, occupation times, venting, and conversation levels (Credit: BMJ/Nicholas Jones et al/doi.org/10.1136/bmj.m3223)...
- 作者：发表于：2020-09-07 13:20:43 点击：487 查阅全文...
- Blueberry farmers warn of 'disaster' crop
- The blueberry is a fruit synonymous with the US, but farmers of the wild crop are struggling. David Yarborough is unequivocal about this summer's wild blueberry harvest in Maine. "It has been terrible," he says. Prof Yarborough, a...
- 作者：发表于：2020-08-31 15:42:55 点击：517 查阅全文...
- UK sees highest case count since June
- Just in case you missed yesterday's UK figures, here's a recap. The UK recorded its highest daily increase in coronavirus cases since June - with a further 1,522 positive tests. In terms of cases, the UK is on an upward trend. A further 12 deaths...
- 作者：发表于：2020-08-28 15:38:30 点击：367 查阅全文...
- How long does the coronavirus live on surfaces?
- A contractor for the Metropolitan Transit Authority (MTA) wipes a bench of a subway train in New York, June 10, 2020. A grocery store cashier cleans and sanitizes her checkout lane before opening in Torrance, Calif., April 27, 2020...
- 作者：发表于：2020-08-20 10:29:15 点击：608 查阅全文...
- First night of Democratic National Convention kicks off in Milwaukee
- The control room for the Democratic National Convention is seen before the start of the convention Monday, Aug. 17, 2020, in Milwaukee. ...
- 作者：发表于：2020-08-18 15:22:09 点击：383 查阅全文...
- Americans, go home: Tension at Canada-US border
- As the pandemic continues to sweep the US, Canadians are getting more and more concerned about what American visitors could be bringing with them over the border. A July poll by Ipsos Reid found that eight in ten Canadians wanted the...
- 作者：发表于：2020-08-13 14:26:39 点击：490 查阅全文...
- Jiankou: China's remote and dangerous Great Wall
- China's Great Wall: How technology is helping to restore it. The Jiankou section of the wall ribbons over top mountains for 20km (Credit: Amanda Ruggeri) Built in the 1500s and early 1600s, the Jiankou section was left u...
- 作者：发表于：2020-08-11 15:34:43 点击：783 查阅全文...
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