the bbc boss mike tom bateman in cairo. -- l boss mike tom bateman in cairo. —— bbc�*s tom bateman.e heat increase women's risk of miscarriage and stillbirth? as our planet heats up, research shared with the bbc suggests working in extreme heat during pregnancy doubled the risk of stillbirth and miscarriage in india. india is one of the countries most exposed and vulnerable to heat — let's put that into context. over the past five decades, india has experienced more than 700 heatwave events. which have killed at least 17,000 people. climate experts say that india's extreme heat events could �*cross the survivability limit�* by 2050. researchers are now working with scientists in the uk to better understand how extreme heat could have an impact on advice for pregnant women globally. our global health correspondent tulip mazumdar has been to the state of tamil nadu to meet some of the women who took part in the study. summer is coming. india is predicted to become one of the first countries where temperatures will top the safe limit for healthy people who arejust sitting in the shade.