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Why do tigers have stripes?

  • Written by Andrew Cushing, Assistant Professor in Zoological Medicine, University of Tennessee
image

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.

Why do tigers have stripes? – Vidit M., age 8, New Delhi, India

When tigers stalk their prey, usually in the murky light of dusk or dawn, they are nearly invisible. Whether they live in...

Read more: Why do tigers have stripes?

Laughing is good for your mind and your body – here's what the research shows

  • Written by Janet M. Gibson, Professor of Cognitive Psychology, Grinnell College
imageIt's hard to beat a good laugh with a friend.Klaus Vedfelt/DigitalVision via Getty Images

Amusement and pleasant surprises – and the laughter they can trigger – add texture to the fabric of daily life.

Those giggles and guffaws can seem like just silly throwaways. But laughter, in response to funny events, actually takes a lot of work,...

Read more: Laughing is good for your mind and your body – here's what the research shows

The rise and fall of Tab – after surviving the sweetener scares, the iconic diet soda gets canned

  • Written by Jeffrey Miller, Associate Professor, Hospitality Management, Colorado State University
imageBefore there was Diet Coke, there was Tab.Ramin Talaie/Corbis via Getty Images

Tab, the Coca-Cola company’s original diet soda brand, is headed to the soda graveyard, joining retired brands such as Like, Leed and Limette.

Coca-Cola has announced that it is discontinuing Tab after 57 years on the market, and fans of the drink will have until...

Read more: The rise and fall of Tab – after surviving the sweetener scares, the iconic diet soda gets canned

Opportunities to practice real-life philanthropy bring academic benefits

  • Written by Kajsa Larson, Associate Professor of Spanish; Faculty Coordinator of Mayerson Student Philanthropy Project classes, Northern Kentucky University
imageCollege students participating in philanthropy-based courses are 38% more likely to graduate. master1305/Getty Images

A crisis shelter for battered women. A nonprofit that provides wigs and makeup for breast cancer patients. An organization that helps parents of children addicted to heroin.

All three of these groups have benefited from US$2,000...

Read more: Opportunities to practice real-life philanthropy bring academic benefits

Biden's ambitious energy plan faces headwinds, but can move the US forward

  • Written by Scott L. Montgomery, Lecturer, Jackson School of International Studies, University of Washington
imageFast electric vehicle charging stations at a rest stop on Interstate 95 in Maryland.Earth and Main/Flickr, CC BY-SA

President-elect Joe Biden calls climate change an existential threat to America’s environment, health, national security and economy, and has promised a clean energy revolution to counter it. Biden has pledged that on his first...

Read more: Biden's ambitious energy plan faces headwinds, but can move the US forward

How Joe Biden did so well in Georgia

  • Written by Bev-Freda Jackson, Adjunct Professorial Lecturer, American University School of Public Affairs
imageIn Atlanta, people gather to dance and celebrate the election of Joe Biden as the next president.AP Photo/Brynn Anderson

For nearly 30 years, the state of Georgia has voted reliably Republican in presidential elections. Not since 1992 has the state backed a Democrat for president. Now, the hand recount of 2020 election ballots has confirmed Joe...

Read more: How Joe Biden did so well in Georgia

How Biden might stimulate the sputtering US economy: 4 questions answered

  • Written by R. Andrew Butters, Assistant Professor of Business Economics, Indiana University
imageThe economy will be one of the president-elect's top priorities in January. AP Photo/Andrew Harnik

Editor’s note: President-elect Joe Biden has said fixing the economy will be one of his administration’s top priorities when he takes office in January. R. Andrew Butters, assistant professor of business economics and public policy at...

Read more: How Biden might stimulate the sputtering US economy: 4 questions answered

Why Trump's election fraud claims aren't showing up in his lawsuits challenging the results

  • Written by Steven Mulroy, Law Professor in Constitutional Law, Criminal Law, Election Law, University of Memphis
imageTrump lawyer Rudy Giuliani alleges election fraud during a news conference at the Republican National Committee headquarters, Nov. 19, 2020, in Washington. Jacquelyn Martin/AP Photo

There seems to be a real disconnect between the claims of widespread fraud, a stolen election and illegal voting made by President Donald Trump and his allies and the a...

Read more: Why Trump's election fraud claims aren't showing up in his lawsuits challenging the results

Rural hospitals are under siege from COVID-19 – here's what doctors are facing, in their own words

  • Written by Lauren Hughes, Physician, Associate Professor of Family Medicine, University of Colorado Anschutz Medical Campus
imageSmall rural hospitals across the country are struggling to find enough space, staff and supplies.AP Photo/Charlie Riedel

It’s difficult to put into words how hard COVID-19 is hitting rural America’s hospitals. North Dakota has so many cases, it’s allowing asymptomatic COVID-19-positive nurses to continue caring for patients to...

Read more: Rural hospitals are under siege from COVID-19 – here's what doctors are facing, in their own words

Keeping indoor air clean can reduce the chance of spreading coronavirus

  • Written by Shelly Miller, Professor of Mechanical Engineering, University of Colorado Boulder
imageOpen windows and doors to boost air flow and help remove airborne particles. Daniela Torres/EyeEm via Getty Images

The vast majority of SARS-CoV-2 transmission occurs indoors, mostly from the inhalation of airborne particles that contain the coronavirus. But in spite of the obvious risks posed by being inside, according to the Centers for Disease...

Read more: Keeping indoor air clean can reduce the chance of spreading coronavirus

More Articles ...

  1. Amid a raging pandemic, the US faces a nursing shortage. Can we close the gap?
  2. COVID-19 vaccines were developed in record time – but are these game-changers safe?
  3. Five reasons Trump's challenge of the 2020 election will not lead to civil war
  4. Why it's important to see women as capable ... of terrible atrocities
  5. What's cellular about a cellphone?
  6. Returning the 'three sisters' – corn, beans and squash – to Native American farms nourishes people, land and cultures
  7. Trump invitation to Michigan lawmakers could spark state and federal political crisis
  8. While spending holidays at home, here are a dozen more things you can do to help stop COVID-19
  9. As CDC warns against Thanksgiving travel, here are a dozen more things you can do to help stop COVID-19
  10. JFK conspiracy theory is debunked in Mexico 57 years after Kennedy assassination
  11. 4 tips for college students to avoid procrastinating with their online work
  12. Why face masks belong at your holiday gathering – 7 things you need to know about wearing them
  13. Why face masks belong at your Thanksgiving gathering – 7 things you need to know about wearing them
  14. More families are discussing end-of-life planning as COVID-19 cases rise – here's how to start the conversation
  15. College-age kids are drinking less alcohol – but smoking more marijuana
  16. With 250,000 US deaths, COVID-19 is triggering more end-of-life planning – and young people want in on the discussions
  17. College-age kids and teens are drinking less alcohol – but something else is rising
  18. College-age kids and teens are drinking less alcohol – marijuana is a different story
  19. What's the gold standard, and why does the US benefit from a dollar that isn't tied to the value of a glittery hunk of metal?
  20. US colleges report a 43% decline in new international student enrollment, and not just because of the pandemic
  21. 3 reasons for information exhaustion – and what to do about it
  22. Curved origami offers a creative route to making robots and other mechanical devices
  23. Así se decide formalmente quién será el nuevo presidente de Estados Unidos
  24. ¿Qué es el botox y cuánto puedo ponerme?
  25. Trump's purge of defense agencies comes at a vulnerable time for US national security
  26. No, soaring COVID-19 cases are not due to more testing – they show a surging pandemic
  27. Election polls are more accurate if they ask participants how others will vote
  28. Patsy Takemoto Mink blazed the trail for Kamala Harris – not famous white woman Susan B. Anthony
  29. Progressive prosecutors scored big wins in 2020 elections, boosting a nationwide trend
  30. Election spending in 2020 doubled to $14 billion – 3 takeaways from a campaign finance expert
  31. How mRNA vaccines from Pfizer and Moderna work, why they're a breakthrough and why they need to be kept so cold
  32. A brief history of presidents snubbing their successors – and why the founders favored civility instead
  33. CBD sales are soaring, but evidence is still slim that the cannabis derivative makes a difference for anxiety or pain
  34. Nearly two-thirds of older Black Americans can't afford to live alone without help – and it's even tougher for Latinos
  35. Virus evolution could undermine a COVID-19 vaccine – but this can be stopped
  36. Why for-profit college enrollment has increased during COVID-19
  37. Hoarding, stockpiling, panic buying: What's normal behavior in an abnormal time?
  38. Racial discrimination ages Black Americans faster, according to a 25-year-long study of families
  39. Coronavirus relief funds could easily pay to stop the worst of climate change while rebooting economies
  40. American timber industry crippled by double whammy of trade war and COVID-19
  41. A record number of women will serve in the 117th Congress, including at least 51 women of color
  42. What monoclonal antibodies are – and why we need them as well as a vaccine
  43. Secondhand clothing sales are booming – and may help solve the sustainability crisis in the fashion industry
  44. Trump 2024? Presidential comebacks have mixed success
  45. 7 things President-elect Biden can achieve on health care
  46. Connecting to nature is good for kids – but they may need help coping with a planet in peril
  47. Regulators can help clear the way for entrepreneurial energy companies to innovate
  48. Pro-mask or anti-mask? Your moral beliefs probably predict your stance
  49. How do geese know how to fly south for the winter?
  50. ¿Olvidar un nombre o una palabra significa que tengo demencia?