Environment

How many solar panels do I need on my house to become energy independent?

How can the average homeowner become energy-independent?

Once air reaches the dew point, will the rate of condensation change if the temperature is lowered?

What do we have to do to aluminum and plastic to recycle them?

How can harmful substances be removed from waste water?

Can nuclear waste be put to some positive use instead of just polluting the environment?

Can global warming be reversed?

Are we harming the structure of the earth by taking so much oil out of it?

How can we prevent walls from collapsing in earthquakes?

How long does it take oil from an underwater spill to reach the surface?

Are nanoparticles harmful to the environment?

What are the chances that a large asteroid will collide with Earth—and will we see it coming?