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From fertiliser to Zyklon B: 100 years of the scientific discovery that brought life and death

Several hundred scientists from across the globe will gather in Ludwigshafen, Germany, next week to discuss a simple topic: "A hundred years of the synthesis of ammonia." As titles go, it is scarcely a grabber. Yet the subject could hardly be of greater importance, for the gathering on 11 November …

Apple, Google, Facebook don't pay the highest engineer salary

Some of tech's heavy hitters slide down the rankings for the 25 highest-paying companies for software engineers, according to a new Glassdoor survey.<p>For software engineers, life must seem like it keeps getting better. Not only are salaries on the rise as companies compete for talent, but there are …

Employment

After Snowden’s leaks, China’s Huawei calls for more transparency in the tech industry

With all of the recent revelations about the US National Security Agency’s surveillance programs, it must be hard for the Chinese telecom equipment manufacturer Huawei not to gloat a little bit.<p>After all, the leaks from former contractor Edward Snowden showed that the NSA enlisted US technology …

Surveillance

Can Online Education Thrive in China?

Investors are salivating over the market's massive potential. But first, MOOCs will have to overcome technical issues and a teacher-centric approach to learning.<p>Coursera has already launched a Chinese-language platform linked to National Taiwan University's history and probability classes and …

Brains Sweep Themselves Clean Of Toxins During Sleep

While the brain sleeps, it clears out harmful toxins, a process that may reduce the risk of Alzheimer's, researchers say.<p>During sleep, the flow of cerebrospinal fluid in the brain increases dramatically, washing away harmful waste proteins that build up between brain cells during waking hours, a …

Why do we sleep? To clean our brains, say US scientists

Scientists in the US claim to have a new explanation for why we sleep: in the hours spent slumbering, a rubbish disposal service swings into action that cleans up waste in the brain.<p>Through a series of experiments on mice, the researchers showed that during sleep, cerebral spinal fluid is pumped …