Voyager 1, a NASA probe launched in the 1970's makes history as the first human-made object to leave the solar system.
The U.S. technology giant Apple unveils two new iPhone models.
The World Bank has released new reports outlining the health challenges facing six major regions.
Pumping underground water for thirsty cities and crops can pull in arsenic from nearby polluted water sources but a new study shows that the contamination moves much more slowly than previously feared.
Satellite technology has revealed that the drought-stricken Turkana region of northern Kenya lies atop two giant underground lakes, or aquifers.
And although the Arctic Sea Ice extent didn't melt as much as it last year experts say some day in this century, the Arctic sea will spend a summer completely ice-free.