A new study points to a stunning loss of topsoil in the Corn Belt — the result of farming practices that have depleted this once-fertile ground. Beyond diminished agricultural productivity and more carbon in the atmosphere, it is a catastrophic loss of an irreplaceable resource.

By Verlyn Klinkenborg

Biodiversity

Assisting Evolution: How Far Should We Go to Help Species Adapt?

An Australian project to help threatened marsupial species adapt to avoid predatory cats is among a host of ‘assisted evolution’ efforts based on the premise that it is no longer enough to protect species from change: Humans are going to have intervene to help them change.

By Elizabeth Kolbert

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Opinion

Avoiding a ‘Ghastly Future’: Hard Truths on the State of the Planet

A group of the world’s top ecologists have issued a stark warning about the snowballing crisis caused by climate change, population growth, and unchecked development. Their assessment is grim, but big-picture societal changes on a global scale can still avert a disastrous future.

By Carl Safina

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