The trails are a reminder of our insignificance. We come and go, but nature is forever. It puts us in our place, underscoring that we are not lords of the universe but components of it...So when the world seems to be falling apart, when we humans seem to be creating messes everywhere we turn, maybe it's time to rejuvenate in the cathedral of the wilderness - and there, away from humanity, rediscover our own humanity.

If President Bush is serious about genocide, an immediate priority is to stop the cancer of Darfur from spreading further, which means working with France to shore up Chad and the Central African Republic.

Look, we'll have to confront the pathologies of poverty at some point. We can deal with them cheaply at the front end, in infancy. Or we can wait and jail a troubled adolescent at the tail end. To some extent, we face a choice between investing in preschools or in prisons.

I think it's dangerous to be optimistic.

The equivalent of five jumbo jets' worth of women die in labor each day, but the issue is almost never covered.

So Kim Kardashian is getting a divorce, 72 days after a wedding that is variously reported to have cost $10 million or more. Just to put that in perspective, that sum could have built 200 schools in poor countries around the world for kids who desperately want an education. Then Kardashian could have helped transform the world, not just entertain it. And the schools would have lasted incomparably longer than her marriage.

The north of the Central African Republic is now a war zone, with rival armed bands burning villages, kidnapping children, robbing travelers and killing people with impunity.