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- Health ministry sets timeframe for keeping animals treated with antibiotics out of food chain
- Rap for ad
- Illegal GM cotton spreads across India 1
- 57 people die as heat wave sweeps Andhra Pradesh
- Silent killers 5
- Gujarat pollution board gets a makeover in efficiency 33
- Science and Technology - Briefs
- Cool medicine
- Auroville’s alternative galaxy 2
- Inheritance of loss
- Environment ministry wants to restore night traffic through Bandipur tiger reserve 52
- A green facade 45
- Diesel: when bad policy makes for toxic hell 38
- Gujarat pollution board gets a makeover in efficiency 33
- What’s good insulation? 30
- How vulnerable are India's nuclear power plants to disaster 28
- Grand distraction called river interlinking 28
- Eat at your own risk 27
- Green energy takes toll on green cover 26
- Temporary solution, permanent jam 25
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Shark secrets
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Issue Date: Oct 15, 1999
Keeping ones mouth shut? Even the sharks know this, if we are to believe David Sims of the University of Aberdeen in the uk . According to Sims, basking sharks know when to keep their mouth shut, while they cruise the coast. He has also calculated that sharks need to keep their mouths shut when there is less than 0.55 gm of plankton per cubic metre. Below this, sharks would not recoup the extra energy needed to swim with an open mouth ( Proceedings of the Royal Society B , Vol 266, p1, 437).
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