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"There are some who can live without wild things, and some who cannot. These essays are the delights and dilemmas of one who cannot. Like winds and sunsets, wild things were taken for granted until progress began to do away with them. Now, we face the question whether a still higher 'standard of living' is worth its cost in things natural, wild and free." — A Sand County Almanac

A Sand County Almanac, a collection of essays and observations, was written decades ago by Aldo Leopold, the father of the American conservation movement.

The American conservative movement has its homecoming this week: the Conservative Political Action Conference, where everyone from politicians to peddlers is out to inspire the faithful.

Last year, one of the headline speakers was former vice presidential candidate Sarah Palin, who harked back to the second-ever CPAC in 1975, when Ronald Reagan laid out a vision for a conservative Republican Party.

She invoked his image of a banner of bold colors, not pale pastels.

Christa and Cara Parravani were identical twins. When they were 28, Cara died of a drug overdose, and Christa spiraled into depression.

In her new book, Her: A Memoir, Christa explores their bond of sisterhood, which went beyond blood into the elliptical world of twinhood.

Both were artists, one a writer and the other a photographer. Both married young. Both lived through a hardscrabble childhood with a troubled mother. But Cara's path diverged after she was attacked and raped at age 24.