Johns Hopkins University

Johns Hopkins University is a world-class university in Baltimore, Maryland. Its goal is to educate its students and cultivate their capacity for life-long learning, to foster independent and original research, and to bring the benefits of discovery to the world.

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These rats are in special cages for urine collection. Every year, millions of animals are used for testing chemicals that are used in industrial products. By unoL/shutterstock.com

AI more accurate than animal testing for spotting toxic chemicals

Testing new industrial chemicals is essential for public health and the environment. But animal testing is costly, and too many chemicals are left untested. A new AI tool may solve the problem.
China’s aspirations of global dominance will hit a snag given the world’s other major powers identify democratic values as central to their national identies. Only China and Russia do not. Russian President Vladimir Putin and Chinese President Xi Jinping in Beijing in June 2018. (AP Photo/Dake Kang)

The prospects for Chinese leadership in an age of upheaval

New research suggests the values and identities of the world's great powers present a major barrier to China's aspirations of global domination. Do not bet on China’s hegemonic prospects just yet.
Photo by Kat J on Unsplash

Extreme stress in childhood is toxic to your DNA

Separating children from their parents is not just a psychological stress, it's a DNA stress. Scientific research shows that early life stress may have irreversible effects on how DNA works in the cells of the body.
Former U.S. president Richard Nixon is seen here with Pierre Trudeau in Ottawa in 1972. Nixon was bitterly opposed to Canada’s Auto Pact moves 50 years ago, saying Canada had cheated at the expense of American jobs and investment. He refused calls to exempt Canada from an import surcharge. (THE CANADIAN PRESS)

Why Canada shouldn’t always count on special treatment from the U.S.

U.S. President Donald Trump has exempted Canada, for now, from hefty tariffs on steel. An increase in defence spending would likely stand Canada in greater stead with the president.
When should you ask your doctor for opioids? Monkey Business Images/Shutterstock.com

Is it wrong to ask your doctor for opioids?

A scholar explains why there is no one answer. Some pain is devastating, and sometimes such pain responds well to opioids. On the other hand, there is evidence that some physicians overprescribe.
If New Zealand introduces a climate refugee visa, 100 Pacific Islanders could be granted access on the basis that their home islands are threatened by rising seas. Reuters/David Gray

Six things New Zealand’s new government needs to do to make climate refugee visas work

New Zealand's plan to create the world’s first humanitarian visa for climate refugees has to consider ways people from Pacific Island nations actually want to be assisted.
On June 1, 2017, President Donald Trump announced that the United States will leave the Paris climate accord. Reuters/Kevin Lamarque

Why Trump’s decision to leave Paris accord hurts the US and the world

A panel of academics and scientists explain the damages to the Earth, the economy and US moral standing in the world by Trump's decision to abandon the Paris climate accord.
Pit latrine in Dar es Salaam, Tanzania. Access to clean water and sanitation are key to preventing cholera epidemics. D. Schafer, SuSanA/Flickr

How El Niño forecasts can help prevent cholera deaths in Africa

Cholera kills thousands every year but is treatable if it is caught early. Understanding how El Niño shifts cholera risks in Africa can help countries prepare for outbreaks and save lives.

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