Переведите if you to know what the weather's going to be like this weekend,ask a weather-man.if you want to know what it'll be like in 100 years,ask a scientist.the most important influence on the weather of the future is likely to be global warming.global warming may or may not be the great environmental crisis of the next century. here's what we know about global warming.since the industrial age(say,1800),the concentration of the so-called "green-house gases"-carbon dioxide,methane and others-in the atmosphere has risen about 30 per cent.in the past century temperatures have increased 1 degree fahrenheit.one opinion is that these tendencies are connected.industrial and transportation emissions increased carbone dioxide,trapping more heat in the atmosphere and raising temperatures.another opinion is that the small temperature rise is a natural climatic variation.the next hundred years,most scientists agree,will see the earth heat up further.we don't know what the effects of warming might be.warmer weather might make some areas more attractive and others less. we don't know how to prevent warming.stabilizing emissions isn't enough.no one knows how to lower emissions without crushing the world economy.based on present knowledge,the best way of coping with warming-if it happens-would be to adapt to it.
