Young people who use screens before sleeping have more sleep problems Young people (13-18 years) who use light-emitting screens daily in the hour before going to sleep have more sleep problems.
Without measures emissions of HFC greenhouse gases will increase rapidly Without global agreement on the use of HFCs, their contribution to the greenhouse effect may increase sharply to 10 percent of that of CO2 by 2050. The current contribution is less than 1 percent.