The Hindu
A LED-based signal installed on Anna salai in Chennai... Photo: M. Moorthy
LEDs disrupt sleep
In the frenetic, coffee-fuelled lives of today, too many people are not getting enough sleep. Modern light-emitting diodes (LEDs) used in energy-efficient lighting as well as television and compute...
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‘Bilateral mastectomy is not a foolproof method’
The link between harbouring deleterious mutations in BRCA1 and BRCA2 genes and the risk to breast cancer and ovarian cancer, is not absolute. This means if 100 ladies have the same deleterious mut...
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Using gold nanoparticles for drug delivery
Using bio-resources, scientists from the Indian Institute of Chemical Technology (IICT), Hyderabad, have synthesised eco-friendly gold nanoparticles which could be used as carriers for delivering a...
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Iceberg flotation
Why is a large part of an iceberg under water though ice is lighter than water?
V. RAJALAKSHMI
Chennai
Ice floats in water because it is lighter (less dense) than...
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