NewsPronto

 
Men's Weekly

.

USA Conversation

The Conversation USA

The Conversation USA

Female giraffes drove the evolution of long giraffe necks in order to feed on the most nutritious leaves, new research suggests

  • Written by Douglas R. Cavener, Huck Distinguished Chair in Evolutionary Genetics and Professor of Biology, Penn State
imageA female giraffe browsing.

Everything in biology ultimately boils down to food and sex. To survive as an individual you need food. To survive as a species you need sex.

Not surprisingly then, the age-old question of why giraffes have long necks has centered around food and sex. After debating this question for the past 150 years, biologists still...

Read more: Female giraffes drove the evolution of long giraffe necks in order to feed on the most nutritious...

More Articles ...

  1. With a record-breaking 2024 Atlantic hurricane forecast, here’s how scientists are helping Caribbean communities adapt to a warming world
  2. Heat index warnings can save lives on dangerously hot days − if people understand what they mean
  3. Removing Cuba from list of countries ‘not fully cooperating’ over terrorism may presage wider rapprochement – if politics allows
  4. Why India and Pakistan’s T20 cricket showdown in New York is such a big deal
  5. Could Elvis’ Graceland hold a key to bridging America’s cultural divide?
  6. Your favorite drink can cause breast cancer – but most women in the US aren’t aware of alcohol’s health risks
  7. 500 years ago, Machiavelli warned the public not to get complacent in the face of self-interested charismatic figures
  8. Narendra Modi sworn in as India’s prime minister for a third term after a narrow win – suggesting Indian voters saw through religious rhetoric
  9. Modi’s narrow win suggests Indian voters saw through religious rhetoric, opting instead to curtail his political power
  10. Life on the US-Mexico border is chaotic. An immigration scholar explains why − and it’s not for the reasons that some GOP lawmakers claim
  11. Wisconsin is a key swing state this year – and has a history of being unpredictable
  12. Trump’s rhetoric after his felony conviction is designed to distract, stoke fear and ease the way for an anti-democratic strongman
  13. Sargassum is choking the Caribbean’s white sand beaches, fueling an economic and public health crisis
  14. Pregnancy is an engineering challenge − diagnosing and treating preterm birth requires understanding its mechanics
  15. Messages can trigger the opposite of their desired effect − but you can avoid communication that backfires
  16. Trump’s lawyers in lawsuits claiming he won in 2020 are getting punished for abusing courts and making unsupported claims and false statements
  17. Forgetting appointments, deadlines and that call to Mom − the phenomenon of prospective memory and how to improve yours
  18. An American flag, a pencil sharpener − and the 10 Commandments: Louisiana’s new bill to mandate biblical displays in classrooms is the latest to push limits of religion in public schools
  19. Scrappy, campy and unabashedly queer, public access TV series of the 1980s and 1990s offered a rare glimpse into LGBTQ+ life
  20. ‘The first wave went through hell’ – how the 16th Infantry Regiment’s heroism helped bring victory on D-Day
  21. Mexico elects first female president − but will that improve the lot of country’s women?
  22. Online shoppers behave differently after chatting with staff of the opposite gender, new research shows – here’s why businesses should be paying attention
  23. School boards, long locally focused and nonpartisan, get dragged into the national political culture wars
  24. Anti-abortion rights activists navigate a new, post-Roe landscape, as state bans mean they can ‘save babies’
  25. Returning a 170-year-old preserved lizard to Jamaica is a step toward redressing colonial harms
  26. Perception of campus police is more negative among students from minority groups
  27. Why do astronomers look for signs of life on other planets based on what life is like on Earth?
  28. Why the future of democracy could depend on your group chats
  29. Prenatal supplements fall woefully short in providing crucial nutrition during pregnancy – and most women don’t even know it
  30. Who gets to decide what counts as ‘disorder’?
  31. Yes, Donald Trump has a point about political prosecution
  32. Mexico poised to elect first female president: 3 essential reads on landmark vote
  33. China turns to private hackers as it cracks down on online activists on Tiananmen Square anniversary
  34. Trump’s guilty verdict is not the end of the matter
  35. Does the US have a planned economy? You might be surprised
  36. Engineering cells to broadcast their behavior can help scientists study their inner workings
  37. Internships are linked to better employment outcomes for college graduates – but there aren’t enough for students who want them
  38. Why is ‘moral equivalence’ such a bad thing? A political philosopher explains
  39. Millions of current smokers became addicted when they were teens – and nicotine marketing targets adolescents today just as it did decades ago
  40. ‘Born in the USA’ turns 40 − and still remains one of Bruce Springsteen’s most misunderstood songs
  41. Trump found guilty: 5 key aspects of the trial explained by a law professor
  42. Trump’s prosecution is unprecedented in US – but other countries have prosecuted former leaders
  43. Is collapse of the Atlantic Ocean circulation really imminent? Icebergs’ history reveals some clues
  44. Going to the boardroom from the classroom helps students learn how nonprofits work
  45. Does your service business need AI? Here are 4 rules to help you decide
  46. Drake’s beef with Kendrick Lamar isn’t nearly as important as his tiff with Tupac Shakur’s estate over using the dead rapper’s voice
  47. The rush to return humans to the Moon and build lunar bases could threaten opportunities for astronomy
  48. Eye exercises to improve sight – is there any science behind them? An ophthalmologist explains why you shouldn’t buy the hype
  49. AI is cracking a hard problem – giving computers a sense of smell
  50. Outside Supreme Court justice’s home, a Revolution-era flag, now a call for Christian nationalism