He also produced the thirteen-part series, "From the Earth to the Moon" because of his support for human space travel.

VOA: special.2011.06.17

It was the only part of the spacecraft that could survive the fiery return through the Earth's atmosphere.

VOA: special.2009.07.22

One line is the equator. It is an imaginary line around the widest part of the Earth.

VOA: special.2010.07.14

For the past week people gathered on the National Mall in Washington,DC to take part in Earth Day activities.

VOA: standard.2010.04.25