News Main Animals Archaeology Dinosaurs Earth History Human Animal Space Tech   iStockPhoto |   Natural Repellent As bananas ripen, concentrations of the molecule 1-hexanol increase by 777 percent and 2,3-butanedione by 4,900 percent. These molecules inhibit fruit flies' and mosquitoes' ability to detect CO2. | Discovery News Video   « back to article

advertisement More From Science News For more from the front lines of research, visit Science News at www.sciencenews.org. Subscribe to the Science News biweekly magazine! Once upon a time, the Great Lakes weren't connected and Niagara Falls was but a trickle. Read the SN cover story "Pearls Unstrung." Follow SN's Science and the Public blog Read the August 29 issue of Science News online   Get Animal Videos! Watch videos about dogs, sharks, bats, cats and more!   Top Stories Today 27 May Memorial Day Skywatching: See Half Moon Pass Mars   27 May Everything You Need to Know About Sunscreen   26 May Dust to Dust: The Death of an Exoplanet   26 May SpaceX Capsule Has 'New Car' Smell   26 May Bigfoot: Beyond Footprints and DNA   25 May Flame Retardant Risk Varies By Race   25 May Weed-Killing Lasers Being Developed   25 May Wearable Energy: T-Shirts Could Charge Phones   25 May Dragon Capsule Berthed at Space Station   25 May TWiDN: Bigfoot & Giant Turtle Need to Get Tested

our sites

• Animal Planet
• Curiosity
• Discovery Channel
• Discovery Kids
• Discovery Fit & Health
• HD Theater
• Investigation Discovery
• Military Channel
• Oprah Winfrey Network
• Planet Green
• Science Channel
• TLC
• Turbo
• Velocity

• Consumer Guide Auto
• Consumer Guide Products
• Discovery Education
• Discovery News
• Discovery Retreats
• HowStuffWorks
• MyDiscovery
• Petfinder
• Student Competitions
• TreeHugger

video

• Discovery Channel Video

 

mobile

• Mobile Applications
• Wallpaper & Ringtones
• Mobile Video
• Mobile Web
• Text Alerts

shop

• Discovery Store
• DVDs & Books
• Custom Gear
• Toys & Games
• Gift Sets
• Sale
• Discovery Adventures
• Student Adventures
• Discovery TS
• Discovery Corporate Sales

stay connected

• Email Newsletters
• RSS
• Twitter
• Facebook

corporate

• Discovery Communications, LLC
• Viewer Relations
• Advertising
• Careers @ Discovery
• Privacy Policy
• Visitor Agreement

Image Credits iStockPhoto |

Copyright © 2012 Discovery Communications, LLC. The number-one nonfiction media company.