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Solving a knotty problem
Many people who know they are infected with HIV and want to get married are unwilling to ruin the life of someone who is healthy. Marrying a person who is also infected is a good solution.


Longest prime number discovered
A GERMAN eye specialist with a keen amateur interest in mathematics has discovered the world's largest prime number after a 50-day search using his personal computer. Dr Martin Nowak, who has his own practice in the south German town of ...
IT TRENDS
The mobile push beyond 3G
Broadband wireless is just coming to India — but the mobile world is already taking off on phone networks that are ten times faster. Anand Parthasarathy tries to understand what `Super 3G' is all about.
Going beyond silicon
Crossbar circuits with wire-to-wire separation of less than 30 nanometres would yield a switch packing density approximately 120 times greater than present-day ICs.
Nematode control in cane
IN INDIA, five nematode genera, Pratylenchus, Meloidogyne, Hoplolaimus, Tylenchorynchus and Helicotylenchulus are widely prevalent in sugarcane ecosystem. Damage symptoms Nematode feeding disturbs ...
Red palm weevil menace
Early symptoms of the pest attack are yellowing and wilting of leaves of the inner and middle whorls, presence of small circular holes on the stem with a brownish black viscous fluid oozing out and easy tearing of leaves. Splitting of leaf ...
Agriculture

FARMER'S NOTES
Managing fruit rot disease of areca nut
FRUIT ROT of areca nut, caused by the fungus Phytophthora meadii, is a serious disease that could lead to great economic losses. Also known as "mahali" in Malayalam and "koleroga" in Kannada, the disease may cause fruit drop of 50 to 100 ...
Ant attack
QUESTION: How does one protect Tulsi plants in pots which are infested by red ants? L.S. Venkatesan, Chennai ANSWER: You may spray neem leaf extract on the leaves and sprinkle a combination of wood ash and turmeric ...
Sandal saplings
ANSWER: You may get in touch with your nearest State Forestry Department for the saplings. Readers are invited to send their queries to with full postal address to `Farm Queries,' The Hindu, Kasturi Buildings, 859/860, Anna Salai, ...

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