FLATOW: Yup, they were cheering again this week at the Jet Propulsion Laboratory. The Mars Rover Curiosity made its first moves on the Red Planet. It wiggled its wheels, and it's rolling away from the landing site, toward a spot called Glenelg, actually you can spell it backwards and forwards the same way because it's going to return there.
When you hear somebody speaking Polish, another person speaking Persian, they sound like totally different languages, don't they? But listen more closely and you'll hear similarities, like how one of the Persian words for mother is mada, and in Polish, it's matka. That's because both languages belong to a large family known as the Indo-European languages. A group that contains over 400 languages and dialects: Polish, Persian, English, French, German, Russian, Icelandic. The list goes on.
This is SCIENCE FRIDAY, I'm Ira Flatow. How much do you personally worry about global warming? The people at the Gallup Poll have been asking that question every year since 1989, and according to their latest polling figures, there's been a bit of an uptick in the numbers: 55 percent said they worry about climate change - that's up about four points from last year.
Families wait for hours to register at the Yida refugee camp in South Sudan along the northern border in early July. Within a few weeks, the population of the camp more than doubled, leading to shortages of food, water and medicine.
Credit Paula Bronstein / Getty Images
White tents scatter across the Yida refugee camp along northern border of South Sudan on June 29. The international aid community is struggling to provide food and medical supplies to the families after heavy rains blocked roads to the camp.
Between mass tourism and the Internet, it's never been easier to learn about other cultures. Yet we often stay on the surface. Watching the Olympics opening ceremony a few weeks ago, I was struck by how much of what was presented as quintessential Britishness came from pop culture — James Bond and Mary Poppins and the chorus to "Hey Jude." Although Britain had a global empire not that long ago, the show's director, Danny Boyle, grasped that the world's image of his green and pleasant land now largely derives from movies and songs.