Space Tourism's Carbon Emissions

"Suborbital spaceflights that rely on rubber-based rocket fuel could shrink icecaps, alter the ozone layer and affect global temperatures, according to a new study."

"Rubber-based rocket fuel burned with nitrous oxide is the preferred propellant of the burgeoning space-tourism industry, and chemists suspect such hybrid engines emit sooty black carbon. Closer to Earth, the stuff has been shown to soak up extra radiation from the sun and contribute to climate change. 'This study was a natural extension of the climate-research community gaining a greater and greater appreciation of black carbon in terms of global radiative forcing,' said Martin Ross, an atmospheric scientist at The Aerospace Corporation in El Segundo, California, and leader of the research funded in part by his employer."

LinkedIn meets Tinder in this mindful networking app

Swipe right to make the connections that could change your career.

Getty Images
Sponsored
Swipe right. Match. Meet over coffee or set up a call.

No, we aren't talking about Tinder. Introducing Shapr, a free app that helps people with synergistic professional goals and skill sets easily meet and collaborate.

Keep reading Show less

Reigning in brutality - how one man's outrage led to the Red Cross and the Geneva Conventions

The history of the Geneva Conventions tells us how the international community draws the line on brutality.

Napoleon III at the Battle of Solferino. Painting by Adolphe Yvon. 1861.
Politics & Current Affairs
  • Henry Dunant's work led to the Red Cross and conventions on treating prisoners humanely.
  • Four Geneva Conventions defined the rules for prisoners of war, torture, naval and medical personnel and more.
  • Amendments to the agreements reflect the modern world but have not been ratified by all countries.
Keep reading Show less

The most culturally chauvinist people in Europe? Greeks, new research suggests

Meanwhile, Spaniards are the least likely to say their culture is superior to others.

Image: Pew Research Center
Strange Maps
  • Survey by Pew Research Center shows great variation in chauvinism across Europe.
  • Eight most chauvinist countries are in the east, and include Russia.
  • British much more likely than French (and slightly more likely than Germans) to say their culture is "superior" to others.
Keep reading Show less

What is the Green New Deal?

The Green New Deal is an ambitious attempt to fight climate change, but is it destined to hit the political skids?

Alexandria Ocasio-Cortez stops by the Sunrise Movement's sit-in protest at Congresswoman Nancy Pelosi's office. Credit: Sunrise Movement / Twitter
Politics & Current Affairs
  • Recent protests by the Sunrise Movement have taken the Green New Deal from forgotten policy to trending hashtag.
  • The Green New Deal aims to move the U.S. to 100% renewable energy within a decade.
  • Proponents also hope to catalyze a top-down restructuring of the U.S. economy and advance social justice issues.
Keep reading Show less