Involvement and Influence

	% Comp	Index
Public Activities (past 12 months)
Engaged in one or more public activities past 12 months (net)	88.6%	116
Wrote/emailed elected official	33.3%	169
Wrote/emailed editor newspaper/magazine	15.7%	131
Voted in a public election	73.9%	119
Took active role in civic, social issue	30.2%	213
Written article/book for publication	6.0%	226
Actively worked for political party or candidate	8.0%	238
Held or ran for public office	2.9%	614
Gave speech/addressed public meeting	19.6%	184
Took active role in environmental cause	17.1%	296
Served on company Board of Directors	8.9%	159
Served on Board of Directors of charity or other civic organization	18.8%	242
Worked 10+ hours a month for non-political charitable organization	25.8%	175
Engaged in two or more activities (net)	63.3%	162
Engaged in three or more activities (net)	43.0%	215

Source: 2008 Ipsos Mendelsohn Natural History Subscriber Study. Indexes based on 2008 Mendelsohn Affluent Survey

Deciphering the link between nature and nurture

Raindrop pockmarks may provide clue to the density of Earth's atmosphere 2.7 billion years ago when the Sun was 30 percent dimmer than today.

The legacy of "Brian Tinsley's clever wife"

Tourists are only encouraging a dubious Vietnamese tradition.

Hear author Michio Kaku interviewed by Vittorio Maestro, Editor in Chief of Natural History. (MP3, 19 minutes)