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Earth

Let’s Get Vertical

City buildings offer opportunities for farms to grow up instead of out.

Astronomy

Dead — but not duds

White dwarfs shed light on physics and the fate of the cosmos.

Earth

Tough meteorite made a big impact

The stony meteorite that landed in a remote portion of Peru in September 2007 was traveling abnormally fast when it struck and blasted a crater that was unusually large for the its size, new analyses indicate.

Life

X chromosome is extra diverse

Men who father children with multiple women are responsible for “extra” diversity on the X chromosome, a new study of six different populations suggests.