The sea was once a blessing for the Pakistani city of Gwadar. But it's become a curse
Melting glaciers contribute to rising sea levels, another cause of coastal erosion. The sea level at Karachi rose almost 8 ...
Liquid Water Once Flowed on the Surface of Mars
NASA's Rover found ripples in Martian rock that resemble the wave patterns on a sandy lake bed on Earth. The ripples could ...