How does too much carbon kill phytoplankton? Why are algae and cyanobacteria considered to be carbon sinks? Why do organisms need phosphorus? Did phytoplankton cause Snowball Earth? How do algae help coral reefs? What effects do hurricanes have on phytoplankton? How does La Nina affect phytoplankto...
Why is Earth's core growing so much faster in one direction than the other? Here's what is happening.
Polluted air and steadily rising temperatures are linked to health effects ranging from increased heart attacks and strokes to the spread of infectious diseases and psychological trauma.
a我们应该爱护动物,关爱地球 We should cherish the animal, shows loving concern Earth[translate] a远离香烟 珍爱生命 Is far away the cigarette Treasures the life[translate] aPolly is worried about her lack of experience Polly担心她的缺乏经验[translate] ...
a Chairman Mao once made a famous remark about competition, “To battle with God is great fun! To battle with Earth is great fun! To battle with people is great fun!” His words, although seeming a bit too aggressive, have illustrated that competition is never regarded as something formidab...
Would Earth's magnetic field have ripped it apart 4.5 billion years ago? If the potential at infinity is fraction{-GM}{r}. Then what is the potential at the surface of the earth? Please explain the approach. Why does the geometrical north pole deviate from the mag...
Every year, baby sea turtles hatch on the beach and find their way to deeper waters. It's amazing to see, but how does it happen? It turns out sea turtles use Earth's magnetic field to navigate the ocean. As they age, their navigation skills improve and their map of the ocean become...
One approach is to do the separation early on, Peterson says. “If you have rare earth magnets that are small, as soon as you smash them, all the magnetic material, the powder, will stick to anything that’s [iron-containing] and you’ll lose them,” he says. “We don’t know how...
Iron loses its magnetism when it’s heated to a few hundred degrees, yet Earth’s core – which produces a strong enough magnetic field to hold the planet together – is made of iron that’s so hot it is in a liquid state! Why then, does the molten iron in Earth’s core produce ...
So could geoengineering be the solution to climate change, relieving us of the hassle of cutting back on fossil fuels? No—although the idea that it does is surely why some energy executives and Republican legislators have taken an interest. But even if it works (on which more below)...