Pollution in the Indian capital of New Delhi reached its highest level so far this year on Sunday, with the city declaring a public health emergency. The air quality index in the world’s most polluted city has registered a score of more than 900 – far beyond the score of 500, which qualifies as “severe-plus”. In comparison, the air quality level in London on Sunday topped out... 

A team from the Israel Institute of Technology has developed a device that from a single breath can identify diseases such as multiple forms of cancer, Parkinson’s disease, and multiple sclerosis. While the machine is still in the experimental stages, it has a high degree of promise for use in non-invasive diagnoses of serious illnesses. The international team demonstrated that a medical theory...