Countries surrounding the Arabian Sea may be at a much higher risk of a major earthquake and tsunami than previously thought, say researchers. A tsunami in this area of the Western Indian Ocean could threaten the coastlines of India, Iran, Oman, Pakistan and further afield. The scientists say further investigation should feed into hazard assessments…

The single limestone aquifer, which is the main source of freshwater in Sri Lanka’s northern Jaffna peninsula, is gradually depleting through overuse, researchers say. “The area suffers from severe groundwater imbalance which might reach crisis proportions in the future,” Shanti de Silva, one of two scientists who carried out the research for the agricultural department…