What's in the dark? Countless generations have gazed up at the night sky and asked this question--the same question that cosmologists ask themselves as they study the universe.

The answer turns out to be surprising and rich. The space between stars is filled with an exotic substance called "dark matter" that exerts gravity but does not emit, absorb, or reflect light. The space between galaxies is rife with "dark energy" that creates a sort of cosmic antigravity causing the expansion of the universe to accelerate. Together, dark matter and dark energy account for 95 percent of the...

Comments like "I'm worried sick" convey the conventional wisdom that being "stressed out" will harm our health. Thousands of academic studies reveal that stressful life events (like a job loss), ongoing strains (like burdensome caregiving duties), and even daily hassles (like traffic jams on the commute to work) affect every aspect of our physical and emotional well-being. Cutting through a sea of scientific research and theories, Worried Sick answers many questions about how stress gets under our skin, makes us sick, and how and why people cope with stress differently. Included are...

What meaning does the American public attach to images of key black political, social, and cultural figures? Considering photography's role as a means of documenting historical progress, what is the representational currency of these images? How do racial icons "signify"?

Nicole R. Fleetwood's answers to these questions will change the way you think about the next photograph that you see depicting a racial event, black celebrity, or public figure. In On Racial Icons, Fleetwood focuses a sustained look on photography in documenting black public life, exploring the ways in...

The world's water is under siege. A combination of corporate greed, the elite pursuit of political power, and our unrelenting reliance on carbon-based energy is accerlating a broad range of environmental and political crises. Potentially catastrophic climate change, driven primarily by the consumption of oil and gas, threatens the environment in a variety of ways, including producing unprecedented patterns of heavy weather and superstorms in some places and droughts in others. Alongside intensifying environmental dangers posed by our reliance on carbon energy, the conditions of modern life,...