Taxonomy term

george a. seielstad

Geologic Column: The gift of intelligence

Intelligent life is unique to Earth as far as we know, despite our attempts to search for it elsewhere. The results of humans applying our gift of intelligence have been extraordinary — but they’ve come with consequences. 
15 Feb 2017

Comment: The arrival of the energy future

In the U.S., both solar and wind energy more than tripled between 2008 and 2013. Renewables are now the fastest growing energy sources. But the first steps on a new path often are tentative and require reinforcement.
25 Jun 2015

Science as a model for governance

“Truth, honor, rationality, openness to the contrarian view, engagement with the other, evidentiary arbitration of disputes … are all values that not only make science possible, they also make for a better society, a more open and tolerant society, a more peaceful society.” — Ismail Serageldin, director of the Library of Alexandria in Egypt, as written in the Library of Alexandria publication, “Science: The Culture of Change.”

01 Dec 2011

Human migration: How sustainable is it?

The largest migration of megafauna the world has ever experienced is under way — but it is going unnoticed. The reason? We’re too involved: The massive migration is that of humans moving from the countryside to cities. In 2008, for the first time in history, more than half the world’s people lived in cities, and the United Nations projects that percentage to grow to 60 percent by 2030. The pace of urbanization has been rapid and steeply climbing: In 1800, 3 percent of people lived in cities; in 1900, it was 13 percent; in 1950, it was 29 percent; and in 2005, it was 49 percent.

01 Nov 2010

Crystal Ball EARTH: Agriculture: The future will have a different face than the past

Tomorrow’s agriculture is facing an immense challenge. By 2050, the world’s population will reach somewhere between 9 billion and 10 billion people, and a greater proportion of those people will be enjoying a richer diet than today’s population. That means farmers will have to grow twice as much food. The world has already witnessed a preview of what might happen if large populations don’t receive an adequate supply of food: They do not accept their fates passively.

04 Dec 2009