Alex Steffen The shareable future of cities

Steven Schwaitzberg A universal translator for surgeons

Steven Johnson tours the Ghost Map

Steven Pinker on the myth of violence

Stefan Wolff The path to ending ethnic conflicts

Here is a video about Seeing with Photography Collective group by Steven Erra

So I want to show you a clip of Aphaenogaster desert ants in Professor Stephen Pratt's lab carrying an object.

Stephen, posting on irreverence, calls Tshabalala Msimang a national embarrassment and Hogan a glimmer of hope.

Steven Schwaitzberg If you're in Latin America, you click the I want it in Spanish button and out it comes in real time in Spanish.

Also, my favourite author is Steven Pinker while I like reading to Malcom Gladwell, Amin Maalouf, Dr Ghazi Algosaibi and Anis Mansour.

In this video, the BBQ street vendor Steven talks about his life as a migrant worker in Shanghai, his view on freedom and independence and his ideal China.

The 5th Bomb Wing Security Forces Squadron Commander, Lieutenant Colonel John Worley, was replaced by Lieutenant Colonel Stephen Weaver on 16 June 2008.

How can cities help save the future? Alex Steffen shows some cool neighborhood based green projects that expand our access to things we want and need while reducing the time we spend in cars.

Steven Levitt shares data that shows car seats are no more effective than seatbelts in protecting kids from dying in cars. However, during the question and answer session, he makes one crucial caveat.

Background At the time of publication, the author, Stephen Lewis, aged 67 and living in Toronto, worked as the United Nations Special Envoy for HIV AIDS in Africa, a position he held since 2001.

He connects the structural adjustment loans, with conditions of limited public spending on health and education infrastructure, to the uncontrolled spread of AIDS and subsequent food shortages as the disease infected much of the working age population.

Steven Pinker charts the decline of violence from Biblical times to the present, and argues that, though it may seem illogical and even obscene, given Iraq and Darfur, we are living in the most peaceful time in our species' existence.