Life on other planets

The Accidental Universe

by Alan Lightman,

Science’s crisis of faith

by Travis S. Taylor, Bob Boan,

by Guy Consolmagno,

by Harper’s Staff,

The fluffy frontier

by Jim Schmaltz,

by John E. Brandenburg,

by Frederick W. Turner,

Cultivating a planet--and ourselves

by Carl Sagan,

by Timothy Ferris,

by Harper’s Staff,

Alien invaders, hell, and home is where the heart is

Drawn by Louis Nitka,