Bananas are many people’s favorite fruit. But they could die out (灭绝) by 2050, scientists from the UK said recently (最近). If the world gets hotter, countries such as Brazil (巴西) will harvest (收获) fewer bananas. By 2050, there might not be any more bananas. Will you still want to eat bananas in the future? If so, you should try to help protect the environment.