Hard Numbers:

6: At least six people have been killed and more than 200 injured during rallies in Jakarta disputing the re-election of Indonesian President Joko Widodo.

-12.8: Compared to the last four presidents who were reelected, Donald Trump's popularity is historically weak. His net approval rating today (-12.8%) is about 14 points worse than Ronald Reagan's (1983) and 20 points worse than Barack Obama's (2011) at the same point in their presidencies. He's 25 points behind Bill Clinton (1995) and 45 points behind George W. Bush (2003). Given how little Trump's numbers have changed over the past three years, the path forward looks especially steep.

40: About 40 percent of US companies operating in China say they're considering relocating outside the country, according to a new study. In part, that's because some 47 percent of the members of the American Chamber of Commerce in China and a similar group based in Shanghai say they face retaliation for US tariffs in the form of slower customs clearance, more inspections, and delayed approvals for licenses.

70: How bad is street crime in Mexico City? Armed robberies have become common enough that for 300 to 500 pesos ($15 to $25) you can buy a fake cellphone to hand over instead of parting company with the real thing. The phones feature a realistic-looking startup screen and enough metal inside to mimic the weight of an actual mobile phone. There were an average of 70 muggings per day in Mexico City in the first four months of this year.

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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