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The Conversation

The Earth needs multiple methods for removing CO2 from the air to avert worst of climate change

  • Written by David Goldberg, Lamont Research Professor, Columbia University
Reducing pollution will help stave off climate change but avoiding the worst effects means taking CO2 out of the atmosphere at large scale.AP Photo/J. David Ake

Concentrations of carbon dioxide in the atmosphere are higher than at any time in human history, and nine of the warmest years have occurred since 2005.

Even with the progress made in...

Read more: The Earth needs multiple methods for removing CO2 from the air to avert worst of climate change

'Organic' label doesn't guarantee that holiday ham was a happy pig

  • Written by Michael Haedicke, Associate Professor of Sociology, Drake University
Federal organic regulations require outdoor access for livestock -- but don't specify how much.US Dept. of Agriculture/flickr

This holiday season, Americans will buy some 20 million turkeys and 300 million pounds of ham.

Some of these turkeys and hams will be certified organic, reflecting the common belief that organically raised animals live...

Read more: 'Organic' label doesn't guarantee that holiday ham was a happy pig

The dangers of depicting Greta Thunberg as a prophet

  • Written by Ellen Boucher, Associate Professor of History, Amherst College
Climate activist Greta Thunberg listens during a meeting with climate scientists at the COP25 summit in Madrid, Spain.AP Photo/Paul White

She came from obscurity and ignited a global movement. Beginning with a small but persistent act of protest outside the Swedish parliament, she inspired millions to join her. Her fiery speech to the United...

Read more: The dangers of depicting Greta Thunberg as a prophet

Why are whales big, but not bigger?

  • Written by Matthew Savoca, Postdoctoral researcher, Stanford University
Minke whale.Jeremy Goldbogen, CC BY-ND

Both toothed and baleen (filter-feeding) whales are among the largest animals ever to exist. Blue whales, which measure up to 100 feet (30 meters) long and can weigh over 150 tons, are the largest animals in the history of life on Earth.

Although whales have existed on this planet for some 50 million years,...

Read more: Why are whales big, but not bigger?

How old should kids be to get phones?

  • Written by Fashina Aladé, Assistant Professor, Advertising and Public Relations, Michigan State University
Every kid should have their own cell phone. Or should they? Syda Productions/Shutterstock.com

Curious Kids is a series for children of all ages. If you have a question you’d like an expert to answer, send it to curiouskidsus@theconversation.com.

What age should kids get phones? – Yuvi, age 10, Dayton, Ohio

If it seems like all your...

Read more: How old should kids be to get phones?

‘Richard Jewell’ is only the latest film to depict a female journalist trading sex for scoops

  • Written by Joe Saltzman, Professor of Journalism and Communication, University of Southern California, Annenberg School for Communication and Journalism
Actress Olivia Wilde plays reporter Kathy Scruggs in 'Richard Jewell.'Invision/AP Images/Jordan Strauss

Criticshave lambasted Clint Eastwood’s new biographical drama, “Richard Jewell,” over its depiction of female reporter Kathy Scruggs, who’s played by actress Olivia Wilde.

During the 1996 Summer Olympics in Atlanta,...

Read more: ‘Richard Jewell’ is only the latest film to depict a female journalist trading sex for scoops

Supermassive black hole at the center of our galaxy may have a friend

  • Written by Smadar Naoz, Associate Professor of Physics & Astronomy, University of California, Los Angeles
An artist's conception of two black holes entwined in a gravitational tango.NASA/JPL-Caltech/SwRI/MSSS/Christopher Go

Do supermassive black holes have friends? The nature of galaxy formation suggests that the answer is yes, and in fact, pairs of supermassive black holes should be common in the universe.

I am an astrophysicist and am interested in a...

Read more: Supermassive black hole at the center of our galaxy may have a friend

Winter is coming: 5 essential reads about snow and ice

  • Written by Jennifer Weeks, Environment + Energy Editor, The Conversation
'Tis the season.Anteromite/Shutterstock

As cold weather settles in across North America, some communities have already started up their snowplows, while others keep watchful eyes on the forecast. Snow and ice can wreck travel plans, but they also play important ecological roles. And frozen water can take amazing forms. For days when all talk turns...

Read more: Winter is coming: 5 essential reads about snow and ice

Myths around mental illness cause high rates of unemployment

  • Written by Bandy X. Lee, Assistant Clinical Professor, Yale School of Medicine, Yale University
Many employees with mental illnesses don't get the help they need for fear of discrimination.pathdoc/Shutterstock.com

Even though mental illness affects one in five adults – and depression is the leading cause of disability worldwide – secrecy and stigma around the issue continue.

The problem is especially acute in the workplace. While...

Read more: Myths around mental illness cause high rates of unemployment

Slave life's harsh realities are erased in Christmas tours of Southern plantations

  • Written by Robert E. May, Professor Emeritus of History, Purdue University
Christmas tours to mansions often present a 'magical' experience to tourists, but they ignore the realities of the lives of slaves who worked there.Shreveport-Bossier Convention and Tourist Bureau, CC BY

This holiday season, many Americans will tour historic mansions in the Southern United States that are beautifully decked out in traditional...

Read more: Slave life's harsh realities are erased in Christmas tours of Southern plantations

More Articles ...

  1. School resource officers aren't arrested often – but when they are, it's usually for sexual misconduct
  2. Myanmar charged with genocide of Rohingya Muslims: 5 essential reads
  3. Examining how primates make vowel sounds pushes timeline for speech evolution back by 27 million years
  4. USMCA: The 3 most important changes in the new NAFTA and why they matter
  5. Mexican Mennonites combat fears of violence with a new Christmas tradition
  6. Like 'Little Women,' books by Zitkála-Šá and Taha Hussein are classics
  7. We calculated emissions due to electricity loss on the power grid – globally, it's a lot
  8. Not every campus is a political battlefield
  9. 5 new ways for schools to work with families
  10. What happens when black Americans leave their segregated hometowns
  11. 'Robotic blacksmithing': A technology that could revive US manufacturing
  12. Paul Volcker helped shape an independent Federal Reserve – a vital legacy that's under threat
  13. What can drones do to protect civilians in armed conflict?
  14. Fat-shaming pregnant women isn't just mean, it's harmful
  15. Millions of burnt trees and rusted cars: Post-disaster cleanup is expensive, time-consuming and wasteful
  16. Taliban negotiations resume, feeding hope of a peaceful, more prosperous Afghanistan
  17. Super rats or sickly rodents? Our war against urban rats could be leading to swift evolutionary changes
  18. How the 'extreme abstinence' of the purity movement created a sense of shame in evangelical women
  19. In its anti-'Medicare for All' push, the health insurance industry pulls from an old playbook
  20. A brief guide to how the China-US trade war will affect your holiday shopping
  21. What the Roman senate's grovelling before emperors explains about GOP senators' support for Trump
  22. New studies show discrimination widely reported by women, people of color and LGBTQ adults
  23. Risk rooted in colonial era weighs on Bahamas' efforts to rebuild after Hurricane Dorian
  24. What makes wine dry? It's easy to taste, but much harder to measure
  25. Why the holidays are a prime time for elder abuse, and what you can do to thwart it
  26. Payday lenders have embraced installment loans to evade regulations – but they may be even worse
  27. Why are kids today less patriotic?
  28. Nicolas Bourbaki: The greatest mathematician who never was
  29. Courts have avoided refereeing between Congress and the president, but Trump may force them to wade in
  30. Why it can be hard to stop eating even when you're full: Some foods may be designed that way
  31. What makes Christmas movies so popular
  32. Why the US military usually punishes misconduct but police often close ranks
  33. American influence could take the hit as Putin, Zelenskiy try to make peace in Donbass
  34. Large-scale education tests often come with side effects
  35. American influence could take the hit as Putin, Zelenskiy try to make peace in Ukraine
  36. From their balloons, the first aeronauts transformed our view of the world
  37. NPR is still expanding the range of what authority sounds like after 50 years
  38. Limited eating times could be a new way to fight obesity and diabetes
  39. Turning gray and into the red: The true cost of growing old in America
  40. 5 ways to check a college's financial health
  41. 'Stop-and-frisk' can work, under careful supervision
  42. An ethicist explains why philanthropy is no license to do bad stuff
  43. India's plan to identify 'illegal immigrants' could get some Muslims declared 'foreign'
  44. Why are moths attracted to light?
  45. Bolivia after Morales: An 'ungovernable country' with a power vacuum
  46. How toys became gendered – and why it’ll take more than a gender-neutral doll to change how boys perceive femininity
  47. What's in a title? When it comes to 'Doctor,' more than you might think
  48. The company that makes OxyContin could become a 'public trust' – what would that mean?
  49. Why your generic drugs may not be safe and the FDA may be too lax
  50. Trump's border wall threatens an Arizona oasis with a long, diverse history