Report: Climate Changing More Rapidly Than At Any Point On Record

Going, going … As a whole, the world’s glaciers—such as Italy’s Careser Glacier, seen here in August 1933 (top) and August 2012 (bottom)—have lost ice for the last 23 years in a row. COURTESY OF LUCA CARTURAN/UNIVERSITY OF PADOVA
Going, going … As a whole, the world’s glaciers—such as Italy’s Careser Glacier, seen here in August 1933 (top) and August 2012 (bottom)—have lost ice for the last 23 years in a row.
COURTESY OF LUCA CARTURAN/UNIVERSITY OF PADOVA

A new look at the “vital signs” of Earth’s climate reveals a stark picture of declining health. As global temperatures rise, so do sea level and the amount of heat trapped in the ocean’s upper layers. Meanwhile, mountain glaciers and Arctic sea ice are melting away beneath an atmosphere where concentrations of three key planet-warming greenhouse gases continue to rise.

“Data show that the climate is changing more rapidly now than it has at any time in the historical record,” says Thomas Karl, director of the National Oceanic and Atmospheric Administration’s (NOAA’s) National Climatic Data Center in Asheville, North Carolina. “The numbers speak for themselves.”

Left Brain, Right Brain: Facts and Fantasies

rightbrain-leftbrain

Handedness and brain asymmetry are widely regarded as unique to humans, and associated with complementary functions such as a left-brain specialization for language and logic and a right-brain specialization for creativity and intuition. In fact, asymmetries are widespread among animals, and support the gradual evolution of asymmetrical functions such as language and tool use. Handedness and brain asymmetry are inborn and under partial genetic control, although the gene or genes responsible are not well established. Cognitive and emotional difficulties are sometimes associated with departures from the “norm” of right-handedness and left-brain language dominance, more often with the absence of these asymmetries than their reversal.

What Are Boys and Girls Made of? The Origins of Sexual Dimorphism

What are the differences in males and females? Image: ©Adrian Niederhà | Shutterstock
What are the differences in males and females? Image: ©Adrian Niederhà | Shutterstock

Snips and snails and puppy dogs’ tails, or sugar and spice and all things nice? From our animal-centered point of view, the distinction between males and female can seem rather obvious—many animals have male individuals and female individuals whose differences are often pretty evident at a glance. However, we’re also aware of more exotic variations like hermaphroditism and Tiresias-like midlife gender-bending. Indeed, the further we get from the birds and the bees, the more it becomes unclear what exactly we mean by “male” and “female.” Are these just tags, or are they fundamentally different? And if the latter, how did this fundamental difference come to be?

The First-Ever Expedition to Darvaza Crater: Turkmenistan’s “Door to Hell”

Turmenistan's Davaza Crater - ©CAROLYN DRAKE, PANOS
Turmenistan’s Darvaza Crater – ©CAROLYN DRAKE, PANOS

Turkmenistan’s Darvaza Crater—created more than 40 years ago when the ground under a Soviet drilling rig gave way—has been burning for decades. One man went in to explore the molten “Door To Hell”.