Temperatures were among the highest in the U.K. Today here at Kew Gardens. A scorching烧焦 37.7 degrees. So those who braved the sunshine came prepared. And climate气候 scientists are now confident that heatwaves are more likely可能的 and more extreme极度的 because of climate气候 change. The fact that we've seen these temperature rises上升, the baseline temperature has increased by about one degree globally世界上 since pre-industrial工业的 times, and it's that level that just means in normal conditions we'd see heatwave conditions and temperatures around kind of just above average, but you have that extra layer层 of heat on, that's when we start to break those records记录.
And globally世界上 over the last century the trend倾向 is clear. It has been heating使激动 up. The last four years were the warmest ever recorded. For the future, the temperature increase增加 depends on global全球的 carbon碳 emissions(光、热等的)散发. Current当前的 targets that governments have signed up to to limit限制 those emissions(光、热等的)散发 will see a rise上升 of about 3.3 degrees by 2100. Under the Paris climate气候 agreement同意, that's the more ambitious野心勃勃的 deal买卖 signed up to by almost 200 countries in 2016. The aim目的 is to keep that below 1.5 degrees.
Today of all days we've come to the hottest glass house in Kew Gardens. This is where all the desert-adapted使适应 plants live, and even for these plants they've opened all of the windows to try and get some ventilation通风设备 in here. Because according使一致 to my thermometer it is now more than 39 degrees in here, and these plants are adapted使适应 to the hottest, driest conditions on earth. It's those adaptations适应 that scientists here are studying in order to work out how we might grow more drought-resistant干旱 plants in the future.
While the collections here look exotic异国情调的, they contain plants that could eventually终于 become familiar food crops. Days like today tell us that if we carry on doing exactly what we've done in the past, then that's not going to work. So we're going to have to adapt使适应 what we do and potentially潜在地 adapt使适应 the crops we grow. And so we need to be exploring探险, we need to be researching研究, we need to understanding our options[计] 选项 so that we can change as climate气候 begins to bite.
With the gardens baking in the sun today, the preparation准备 continues for a warmer, more uncertain无常的 climate气候 in the future. A scorching烧焦 37.7 degrees, so those who braved the sunshine came prepared. And climate气候 scientists are now confident that heat waves are more likely可能的 and more extreme极度的 because of climate气候 change. And globally世界上, over the last century, the trend倾向 is clear. It has been heating使激动 up. It's those adaptations适应 that scientists here are studying in order to work out how we might grow more drought-resistant干旱 plants in the future. With the gardens baking in the sun today, the preparation准备 continues for a warmer, more uncertain无常的 climate气候 in the future. Hi, thanks very much for watching our video.