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DNA dating: How molecular clocks are refining human evolution's timeline

  • Written by Bridget Alex, Postdoctoral College Fellow, Department of Human Evolutionary Biology, Harvard University
imageOur cells have a built-in genetic clock, tracking time... but how accurately?Stopwatch image via www.shutterstock.com.

DNA holds the story of our ancestry – how we’re related to the familiar faces at family reunions as well as more ancient affairs: how we’re related to our closest nonhuman relatives, chimpanzees; how Homo sapiens m...

Read more: DNA dating: How molecular clocks are refining human evolution's timeline

During World War I, a silent film spoke volumes about freedom of speech

  • Written by Eric P. Robinson, Assistant Professor of Media Law and Ethics, University of South Carolina
imageChief John Big Tree, Dark Cloud, Jack Cosgrave, Adda Gleason and Robert Goldstein in The Spirit of '76 (1917).IMDb

In the United States, “The Great War” led to unprecedented efforts by the federal government to control and restrict “unpatriotic” speech. But the boundary between speech that undermined the government and...

Read more: During World War I, a silent film spoke volumes about freedom of speech

Who is a better ally for the US – Russia or China?

  • Written by Jeremy Friedman, Assistant Professor, Business, Government, and the International Economy, Harvard Business School
image3D_creation/www.shutterstock.com

Forty-five years ago last February, U.S. President Richard Nixon returned from a visit to China that shocked the world and unsettled leaders in Moscow, who were awaiting a visit from Nixon a few months later.

Soviet leaders wondered if they were finally witnessing the birth of a U.S.-China alliance that they had...

Read more: Who is a better ally for the US – Russia or China?

The face of Latin American migration is rapidly changing. US policy isn't keeping up

  • Written by Jonathan Hiskey, Associate Professor of Political Science and Director of Graduate Studies, Vanderbilt University
imageA Salvadoran family who fled to the U.S. when armed men killed the father.AP Photo/LM Otero

A fundamental shift in U.S. immigration patterns is well underway.

Recent rhetoric from President Donald Trump and the focus of U.S. immigration policies suggest that Mexicans entering the U.S. without authorization are the principal challenge facing...

Read more: The face of Latin American migration is rapidly changing. US policy isn't keeping up

North Korea cyberspace offensives pose challenge in US-China relations

  • Written by Frank J. Cilluffo, Director, Center for Cyber and Homeland Security, George Washington University
imageNorth Korean cyberattacks may increase as the country comes under greater international pressure.BeeBright via shutterstock.com

This week, U.S. President Donald Trump and Chinese President Xi Jinping will meet face to face for the first time. The expansive list of issues they might discuss is likely to include North Korea, the Chinese neighbor and...

Read more: North Korea cyberspace offensives pose challenge in US-China relations

Donor-advised funds: Charities with benefits

  • Written by Philip Hackney, James E. & Betty M. Phillips Associate Professor of Law, Louisiana State University
imageMark Zuckerberg and Priscilla Chan are giving billions to charity through their donor-advised fund instead of a traditional foundation.Jeff Chiu/AP Photo

Can you guess which U.S. organization raised the most money through charitable contributions in 2015? When we ask our students this question, most figure it was the United Way, the Salvation Army...

Read more: Donor-advised funds: Charities with benefits

Techniques of 19th-century fake news reporter teach us why we fall for it today

  • Written by Petra S. McGillen, Assistant Professor of German Studies, Dartmouth College
imageGerman journalist and novelist Theodor Fontane.Wikimedia Commons

Donald Trump appears to have a straightforward definition of fake news: Stories that are critical of him or his presidency are “fake,” while those that praise him are “real.”

On the surface, the logic doesn’t hold up. But at the same time, the way Trump...

Read more: Techniques of 19th-century fake news reporter teach us why we fall for it today

What's at stake as President Trump sits down with China’s Xi

  • Written by Greg Wright, Assistant Professor of Economics, University of California, Merced

The U.S. and China together account for one-third of global economic output, so there is a lot at stake as President Donald Trump meets with his Chinese counterpart Xi Jinping, not least the fate of the world economy over the next few years.

And it is precisely the magnitude of the stakes involved that has led some observers to assume that both...

Read more: What's at stake as President Trump sits down with China’s Xi

Yes, we can do 'sound' climate science even though it's projecting the future

  • Written by Kevin Trenberth, Distinguished Senior Scientist, National Center for Atmospheric Research
imageNobody can observe events in the future so to study climate change, scientists build detailed models and use powerful supercomputers to simulate conditions, such as the global water vapor levels seen here, and to understand how rising greenhouse gas levels will change Earth's systems.NCAR/UCAR, CC BY-NC-ND

Increasingly in the current U.S....

Read more: Yes, we can do 'sound' climate science even though it's projecting the future

With new technology, mathematicians turn numbers into art

  • Written by Frank A. Farris, Associate Professor of Mathematics, Santa Clara University
imageMathematical visualization techniques led the author to create this virtual scene, showing shapes from the realm of mathematics bursting into the physical world.Frank Farris, CC BY

Once upon a time, mathematicians imagined their job was to discover new mathematics and then let others explain it.

Today, digital tools like 3-D printing, animation and...

Read more: With new technology, mathematicians turn numbers into art

More Articles ...

  1. Bosnia's 25-year struggle with transitional justice
  2. The unique case for rural charter schools
  3. How the Trump budget undercuts security risks posed by pandemics
  4. Facial recognition is increasingly common, but how does it work?
  5. Farmers can profit economically and politically by addressing climate change
  6. How Christianity shaped the experience and memories of World War I
  7. The unique strategy Netflix deployed to reach 90 million worldwide subscribers
  8. Ecuador's populist electoral victory for Moreno shows erosion of democracy
  9. How Ayn Rand's 'elitism' lives on in the Trump administration
  10. 1917: Woodrow Wilson's call to war pulled America onto a global stage
  11. Healthy soil is the real key to feeding the world
  12. Can better advice keep you safer online?
  13. From shell-shock to PTSD, a century of invisible war trauma
  14. How World War I ushered in the century of oil
  15. 'Default' choices have big impact, but how to make sure they’re used ethically?
  16. Can the study of epigenomics lead to personalized cancer treatment?
  17. The federal government will stop collecting data on LGBT seniors. That's bad news for their health
  18. Should Americans fear the 'nuclear option' in Congress?
  19. Baseball season begins: Five essential reads
  20. Why women's peace activism in World War I matters now
  21. What history reveals about surges in anti-Semitism and anti-immigrant sentiments
  22. Why men and women lie about sex, and how this complicates STD control
  23. Where's your county seat? A modern mathematical method for calculating centers of geography
  24. How should World War I be taught in American schools?
  25. As the US entered World War I, American soldiers depended on foreign weapons technology
  26. How World War I sparked the artistic movement that transformed black America
  27. How better definitions of mental disorders could aid diagnosis and treatment
  28. Fractal patterns in nature and art are aesthetically pleasing and stress-reducing
  29. Was Chuck Berry the lone genius he's made out to be?
  30. How understanding animals can help us make the most of artificial intelligence
  31. Peace dividends of military alliances go farther than you'd think
  32. The death penalty is getting more and more expensive. Is it worth it?
  33. Is Brexit the beginning of the end for international cooperation?
  34. Who feels the pain of science research budget cuts?
  35. Why states are pushing ahead with clean energy despite Trump's embrace of coal
  36. Why there's more to fixing health care than the health care laws
  37. Why it's important to just say no to bad drug policy
  38. Will Trump continue to pull from a pro wrestling playbook?
  39. Should journalism become less professional?
  40. Gut check: Researchers develop measures to capture moral judgments and empathy
  41. To really help US workers, we should invest in robots
  42. Why Russia gave up Alaska, America's gateway to the Arctic
  43. Does it pay to get a double major in college?
  44. What motivates moral outrage?
  45. The rise of anti-immigrant attitudes, violence and nationalism in Costa Rica
  46. Trump slams brakes on Obama's climate plan, but there's still a long road ahead
  47. Trump's energy and climate change order: Seven essential reads
  48. Trump's FCC continues to redefine the public interest as business interests
  49. We’re suing the federal government to be free to do our research
  50. Climate politics: Environmentalists need to think globally, but act locally