Mass gatherings are regarded as potential risks for transmission of infectious diseases, and might compromise the health system of countries in which they are hosted. The evidence for increased transmission of infectious diseases at international sporting mass gatherings that attract many visitors from all over the world is not clear, and the evidence base for public health surveillance, epidemiology, and response at events such as the Olympics is small.

The medieval Black Death (c. 1347-1351) was one of the most devastating epidemics in human history. It killed tens of millions of Europeans, and recent analyses have shown that the disease targeted elderly adults and individuals who had been previously exposed to physiological stressors. Following the epidemic, there were improvements in standards of living, particularly in dietary quality for all socioeconomic strata.

London: Britain’s monarch is exposed to the worst air pollution in Britain.

London: The River Thames has burst its banks after reaching its highest level in years, flooding riverside towns upstream of London.

A month after she was hit by a car while cycling near AIIMS Flyover, environmentalist Sunita Narain is recuperating slowly but is confident of getting back in the saddle.

Predicted sea-level rises threaten many of the world's most important cities, write Alison Kemper and Roger Martin

The urgent need to reconfigure and transform urban areas to consume fewer resources, emit less pollution, minimize greenhouse gas production, protect natural ecosystems and increase the adaptive capacity to deal with climate risks is widely recognized.

Scientists from the laboratory which created Dolly the cloned sheep have now produced a disease-resistant piglet using a new technique which is simpler than cloning, paving way for genetically modified meat.

The piglet, called “Pig 26”, is the first animal to be created via “gene editing”. It was born four months ago at Edinburgh’s Roslin Institute, where Dolly the cloned sheep was created in 1996.

Experts Say Process A Success In Rats, Raises Hope For Renal Failure Patients

London: A kidney grown in a lab has been successfully transplanted following which it started to produce urine. Scientists from Massachusetts General Hospital (MGH) bioengineered rat kidneys which later successfully produced urine both in a laboratory apparatus and after being transplanted into living animals.

LONDON: In a first-of-its kind attempt, an Australian pilot plans a 16,898 kilometre historic trip from Sydney to London using fuel produced entirely from plastic waste.