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A police officer guards the entrance to Our Lady of the Lake Hospital after a shooting in Baton Rouge, Louisiana. Stephen Lam/Reuters

America’s police culture has a masculinity problem

A macho culture prevails in police departments in America. The recent killing of Philando Castile serves as one example of the way racial bias and police officer machismo work together.
A computer design for home manufacturing of a receiver, the trigger and firing part, of a semi-automatic rifle. simonov/flickr

3D printing: a new threat to gun control and security policy?

Beyond making guns at home, 3D printing could help countries secretly develop nuclear weapons and terrorists stage more effective attacks. How do we protect innovation and ourselves?
Indoor marijuana farms are becoming one of the most energy-intensive industries in the United States. www.shutterstock.com

Curbing the marijuana industry’s voracious energy appetite

As more states legalize marijuana, growing pot indoors is consuming massive quantities of energy. Rules for this new industry should include requirements to use clean power or pay carbon fees.
Pokemon Go puts virtual characters in the real world – which is just part of its appeal. Dalton White/YouTube

Why Pokemon Go became an instant phenomenon

What research into game play and human interaction can tell us about why the newest mobile game craze is attracting so many different people to play.
Trump picks Indiana Governor Mike Pence as vice president. REUTERS/John Sommers II

Mike Pence is the anti-Trump

Trump’s choice of the Indiana governor is a love letter to the Republican base.
Stanford Smith, a worker at the First Union Center in Philadelphia, places a portrait of Republican presidential candidate George W. Bush in the halls of the Republican convention site July 29, 2000. Reuters

Will Trump use the convention to broadcast a more moderate image?

These made-for-TV events are an excellent opportunity for a candidate to shape his or her image. A subtle approach works best. That could be an issue for Trump.
Students for Fair Admissions filed suit against Harvard College on behalf of a Chinese-American applicant. Kevin Lamarque/Reuters

After Fisher: affirmative action and Asian-American students

Here’s why disagreement about affirmative action will not end any time soon. Coming up next is a lawsuit brought by Asian-Americans challenging Harvard’s race-conscious policy.
Chinese dredging vessels are purportedly seen in the waters around Mischief Reef in the disputed Spratly Islands in the South China Sea. Reuters

What’s at stake in China’s claims to the South China Sea?

China claims ownership of almost all of the South China Sea and refuses to abide by a recent ruling calling that hogwash. Why does China want to control the sea so badly?
Democratic U.S. presidential candidate Hillary Clinton speaks to the General Conference of the African Methodist Episcopal Church during their annual convention at the Pennsylvania Convention Center in Philadelphia, Pennsylvania, July 8, 2016. Charles Mostoller/Reuters

How did classified information get into those Hillary Clinton emails?

An academic who used to hold top secret security clearance explains how things get classified and why the Clinton email scandal is hard to nail down.