wet sheets before they go to sleep insteadultimately high heat will destroy more lives indirectly rather than by reaching levels at which the body simply shuts down the ipcc report suggestshigher temperatures will spread disease vectors reduce crop yields and nutrient values slash labour productivity and make outdoor manual labour a lifethreatening activityexperts say the worst impacts could be avoided if global warming is capped as close to 15 degrees celsius as possible in line with the paris agreementbut even then with temperatures rising twice the global average in many regions some severe impacts are baked intodays children will witness more days with extreme heat when manual labour outside is physiologically impossible the ipcc report warns