Environmentalists have been outspoken in their support of smaller family size and abortion rights as keys to reducing global warming. But when it comes to immigration, the single biggest contributor to population growth in the industrial world, they stand largely silent.
| Fredrik Bajer, Writer (1837) |
| Ken Caminiti, Athlete (1963) |
| Tony Danza, Actor (1951) |
| Jean-Pierre Dardenne, Director (1951) |
| Tom Flynn, Celebrity (1931) |
| Glen Hansard, Musician (1970) |
| Garrett Hardin, Environmentalist (1915) |
| Georgia Harkness, Theologian (1891) |
| Terrence J, Actor (1982) |
| Thomas H. Kean, Politician (1935) |
| Leslie Banks, Actor (1952) |
| Jane Welsh Carlyle, Writer (1866) |
| Muhammad Iqbal, Poet (1938) |
| John Maynard Keynes, Economist (1946) |
| Charles MacArthur, Playwright (1956) |
| Mark Twain, Author (1910) |

