O U R S P E C I E S A N D I T S P L A N E T
Global warming and consensus formation
Is the planet's temperature, given what researchers know about it, rising--and if it is, is this dangerous? Informed opinions on this topic may or may not be converging. Two experts discuss what the greenhouse-effect controversy implies about the nature of scientific debate
THE COMING WARMUP: NO TIME FOR COMPLACENCY
By WALLACE S. BROECKERAS A SCIENTIST WHO has spent all of his 40-plus professional years studying various aspects of the present-day climate system and its history, I have quite naturally developed a view about the ongoing buildup of greenhouse gases in our atmosphere. Let me put it this way...
THE INEVITABILITY--AND LIMITS--OF DISSENT
By ALLAN MAZURIN 1965 IT WOULD have been difficult to find climate scientists who believed that humanly caused greenhouse warming was in progress, and for good reason: Average global temperatures had been declining since about 1940. That decline had ended by 1980 when...
PHOTOS: Jonathan Smith