Maria Cheng
latest news & developments
Hawking turns 70, defying disease
As Stephen Hawking turns 70 this week, scientists are baffled how he has managed to survive so long with such a crippling disease.
Superbug threat to New Delhi water
A gene that can turn many types of bacteria into deadly superbugs has been found in samples taken from New Delhi’s drinking water.
Experts explore ways to circumcise men in Africa
The most powerful force against HIV/Aids in Africa may be circumcision, a procedure that’s easily done in the developed world.