Text messaging low carbontheory, men are more responsible.
短信传播低炭论，男人更是有责任。
2
An increasingly attractive theory holds that decreases in atmospheric carbon dioxide start the cooling trend that leads to glaciation.
一个越来越有吸引力的理论认为，大气中二氧化碳的减少引发降温趋势，这趋势导致冰川作用。
3
If the theory was correct, breathing air with extra carbon dioxide should have triggered yawning, while breathing pure oxygen should have suppressed yawning.