Hard Numbers: US Farms Game The System For A Crop Of Cash

3.6: Ten years ago, the number of Chinese students who went to the United States to study was rising at an average clip of 30 percent per year. Last year, that number had fallen to just 3.6 percent, according to the Institute of International Education.

30: South Korea says it'll move fast on plans to give $8 million worth of humanitarian aid to North Korea, which is suffering its worth drought in decades. Now, if you do the math, that comes out to about 30 cents per North Korean.

79: In April, Mexico detained more than 20,000 migrants at its southern border, a jump of some 79 percent compared to one year prior. It was on 2 April that US President Donald Trump backed off on a threat to close the US-Mexico border, saying he was satisfied that Mexican authorities were apprehending "large numbers" of people.

10: About one tenth of US farm operators have scooped up more than half of the money dished out to soften the impact on farmers of the Trump administration's various trade fights. Although there is a cap of $125,000 per applicant, larger farms have apparently used loopholes to collect that money many times over.

Scientists, engineers and technologists are turning to nature in search of solutions to climate change. Biomimicry is now being applied in the energy sector, medicine, architecture, communications, transport and agriculture in a bid to make human life on this planet more sustainable and limit the impacts of global warming. New inventions have been inspired by humpback whales, kingfishers and mosquitoes.

Learn more at Eniday: Energy Is A Good Story

The drumbeat for regulating artificial intelligence (AI) is growing louder. Earlier this week, Sundar Pichai, the CEO of Google's parent company, Alphabet, became the latest high-profile Silicon Valley figure to call for governments to put guardrails around technologies that use huge amounts of (sometimes personal) data to teach computers how to identify faces, make decisions about mortgage applications, and myriad other tasks that previously relied on human brainpower.

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January 27 marks 75 years since the liberation of Auschwitz-Birkenau, the largest Nazi extermination camp. But even as some 40 heads of state gathered in Jerusalem this week to commemorate the six million Jews who were killed, a recent Pew survey revealed that many American adults don't know basic facts about the ethnic cleansing of Europe's Jews during the Second World War. Fewer than half of those polled knew how many Jews were killed in the Holocaust, and close to a third didn't know when it actually happened. Here's a look at some of the numbers.

1: The Greek parliament has elected a woman president for the first time since the country's independence some 200 years ago. A political outsider, Katerina Sakellaropoulou is a high court judge with no known party affiliation. "Our country enters the third decade of the 21st century with more optimism," Greece's prime minister said.

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A quarantine in China– Local authorities have locked down the city of Wuhan, the source of the outbreak of a new and potentially deadly respiratory virus that, as of Thursday morning, had infected more than 540 people in at least six countries. Other nearby cities were also hit by travel restrictions. Rail and air traffic out of Wuhan has been halted. Public transportation is shut, and local officials are urging everyone to stay put unless they have a special need to travel. Wuhan is a city of 11 million people, many of whom were about to travel for the Chinese New Year. We're watching to see whether these extraordinary measures help stem the outbreak, but also to see how the people affected respond to the clampdown.

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