NOAA: Climate change in the Arctic is inevitable
Climate change in the Arctic is almost irreversible and the region is turning to a new climate.Strange beauty of clouds
Not only the familiar white or blue colors, the clouds here are a blend of colors in many different settings.Variation in proteins helps to resist HIV attacks
Modifications of 5 types of amine acids in the HLA-B protein are related to the natural immunity of people with HIV / AIDS.