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A new technique to control laser intensity

Indian scientists have developed a technique that uses electromagnetic radiation to manipulate the intensity of laser beams.
- 14/01/1994
- Down To Earth
- - Science And Technology
  - Physical Science
The iron hand in global temperature

Scientists have found iron concentrations in sea water affect the growth of plankton that keep a tab on carbon dioxide, a greenhouse gas.
- 30/01/1994
- Down To Earth
Sound sense

Fishes seem to be developing ways to detect and avoid high frequency sonars that trawlers use to locate them
- 27/02/1994
- Down To Earth
Learning from lasagne

Porous layers of slurry, zapped with electricity, may revolutionise the treatment of contaminated clay soils
- 14/04/1994
- Down To Earth
Diluting black rain

Positively charged atoms of elements like calcium and magnesium that are present in particulate matter can neutralise acid rain
- 30/04/1994
- Down To Earth
A lead from the past

Evidence trawled from lake sediments in Sweden traces atmospheric lead pollution back to more than 2 millennia
- 30/05/1994
- Down To Earth
Hitting malaria with herbs

A Chinese medicinal plant known as long ago as 168 BC has been found successful in checking malaria, which is becoming increasingly resistant to most drugs
- 14/06/1994
- Down To Earth
Smaller and faster

A new technique could result in particle accelerators small enough to be accommodated in any university laboratory
- 29/06/1994
- Down To Earth
Protection by mimicry and mime

Scientists have devised a new technique to make drugs resembling proteins more effective
- 14/07/1994
- Down To Earth
Peanut profits

The leaves of groundnut plants are ideal forage for cattle
- 14/08/1994
- Down To Earth
Seeds that discourage insects

Genetically engineered pea seeds can successfully ward off voracious pests
- 14/10/1994
- Down To Earth
A diet for the heart

Chemists have confirmed that the Mediterranean cuisine's 2 most important ingredients - garlic and red wine - apparently have a beneficial effect on the heart (Science, Vol 265, No 5178).
- 30/10/1994
- Down To Earth
Soot and diamonds

Alchemists have succeeded in fashioning the high-tech version of the Philosopher's Stone: they can now make diamond films out of soot and a gas named argon. Chemist Dieter M Gruen's magic recipe:
- 14/11/1994
- Down To Earth
Stress pass

Ayurvedic formulations have been found effective in countering the stresses of living in high altitudes
- 29/11/1994
- Down To Earth
Body balance

Two studies suggest that the brain and the nervous system are loaded in favour of symmetry
- 14/01/1995
- Down To Earth
Cutting cholesterol

A new drug for lowering blood cholesterol is a blessing for heart patients
- 30/01/1995
- Down To Earth
Humanising machines

Scientists have incorporated a facet of human logic into a computer programme to help in disease diagnosis
- 14/02/1995
- Down To Earth
Porcine prescription

Pancreatic cells from pigs could help treat diabetics
- 27/02/1995
- Down To Earth
Vehicles of radiation

Radioactivity should be added to the list of potential carcinogens in motor-vehicle exhausts, say scientists from the University of Bristol, UK. Denis Henshaw and colleagues have found raised
- 14/03/1995
- Down To Earth
Material light

Semiconductors have 2 energy bands -- valence band and conduction band. The valence band is filled with electrons; the conduction band has practically none. The electrical conductivity of a material
- 30/03/1995
- Down To Earth
- - Science And Technology
  - Physical Science