Access
To read this story in full you will need to login or make a payment (see right).
News and Views
Nature 423, 815 (19 June 2003) | doi:10.1038/423815a
Open Innovation Challenges
-
Direct Molecular Detection of Proteins and Nucleic Acids
This Challenge is looking for novel approaches to protein and nucleic acid detection. This is an Id...
-
Methods to Analyze Consumer Emotions
The Seeker is looking for methods to analyze consumer emotions. This Challenge requires only a writ...
nature jobs
Head, Medical Writing
- Cactus Global
- Mumbai 400053 India
Multiple Postdoctoral Positions
- University of Iowa
- Coralville, Iowa, USA
Echolocation: Volume control
Amanda Tromans
Bats, dolphins and submarines all use sound rather than vision to locate prey, friend or foe — bats because they hunt at night, dolphins and submarines because their marine environment is all but impenetrable to light. They emit sonar signals, and then process the echoes that are bounced back from distant objects to produce three-dimensional reconstructions of their targets.
To read this story in full you will need to login or make a payment (see right).

