The changes in the planet’s energy budget caused by solar variations are at least ten times smaller in comparison. And they go in the wrong direction: in recent years, the sun has been at its dimmest since satellite measurements began in the 1970’s. So, when unprecedented extreme weather events occur, the prime suspect is naturally the biggest atmospheric change that has happened over the past hundred years—one that has been caused by human emissions.
【正确答案】：相比之下，由太阳变化导致的地球能量“预算”变化至少要小10倍。而这些变化都在向不利的方向发展：自20世纪70年代有了卫星测量算起，最近几年太阳正处于最暗的阶段。因此，当出现前所未有的极端天气时，过去100年中发生的最大程度的大气变化自然成了主要怀疑对象，而这种变化是由人类排放造成的。
