A terrestrial volcano is hotter than its surroundings. The same is true for geysers like the ones in Yellowstone National Park in the United States,
Every breath you take contains a lot of oxygen. Oxygen gas is an important ingredient of our atmosphere. Without it, there would be no human
Many people eat chicken, cow or pig. Cruel enough, if you think about it. But eating other people is much worse, of course. Eating your
If you hold your breath for too long, you will die. Your body needs the oxygen in the air. Without getting enough oxygen, you can’t
Look around you. You see the text you are reading right now. You see the room where you’re sitting in. Outside the window, you may
ALMA is the highest observatory in the world. The Chajnantor Plateau, where the 66 ALMA antennas are located, is at five kilometers above sea level.