Taxonomy term

jay r. thompson

Down to Earth With: Brian Tucker

Some of the world’s most densely populated cities are at highest risk for earthquake-related disasters. Geophysicist Brian Tucker has spent the last two-plus decades trying to help the developing world avoid such disasters, and in 1991, he founded the nonprofit GeoHazards International (GHI) to bring the developed world’s risk-mitigation techniques to high-risk communities in the developing world.

27 Apr 2015

Down to Earth With: Ecologist Chris Field

Last summer, the American Geophysical Union honored Chris Field, founding director of the Carnegie Institution’s Department of Global Ecology, with its annual Roger Revelle Award, which recognizes “outstanding contributions in atmospheric sciences, atmosphere-ocean coupling, atmosphere-land coupling, biogeochemical cycles, climate or related aspects of the Earth system.”

22 Dec 2014

Down to Earth With: Kerry Sieh

After more than 30 years as a professor and researcher at Caltech, earthquake geologist Kerry Sieh (pronounced “sea”) surprised his colleagues when he pulled up stakes in 2008 for a rare opportunity in Southeast Asia to be the founding director of the Earth Observatory of Singapore.

28 Aug 2014

Removing predators increases carbon emissions

Habitat loss, overfishing and invasive species can damage ecosystems, but the loss of predators in particular may have worse consequences than previously thought. In a new study, scientists show that the absence of freshwater predators sharply influences an ecosystem’s carbon dioxide emissions.

12 Jun 2013

Widely used index may have overestimated drought

The severity and frequency of drought are expected to increase worldwide as climate change leads to a warmer atmosphere and regional changes in precipitation, and some research has shown that drought is already increasing. But a new study concludes that the increase in drought claimed by previous studies has been overestimated and that there has actually been little increase over the last 60 years.

07 Apr 2013

The dangers of solar storms: That which gives power can also take it away

Were a massive solar storm to strike Earth, the impacts could rival or exceed the worst natural disasters humans have ever faced. In last month’s issue of EARTH, we explored what is known about solar activity, the sun and its interaction with Earth. This month, we examine the possible effects of solar activity and the vulnerability of power grids and satellites, as well as what is being done to reduce that vulnerability.

21 Jan 2013

How strong was the Carrington Event?

NASA has described the magnetic field of the coronal mass ejection (CME) associated with the 1859 Carrington Event, the largest solar storm ever detected, as “extremely intense” relative to other CMEs. The amount of plasma it ejected is difficult to estimate, but more important in determining its strength is how fast it arrived.

21 Jan 2013

Here comes the solar maximum: What we know - and don't know - about solar storms and their hazards

As solar science continues to advance, researchers are finding new ways to study and forecast the behavior of our star, whose whims endanger our technology-dependent way of life. But what the upcoming peak means for solar storms, and how those storms will affect Earth, remain to be seen.

17 Dec 2012

The long road to understanding our star

The earliest written records of sunspots date back to 165 B.C. in China, but human understanding of the sun didn’t begin making leaps forward until the early 1600s, shortly after the invention of the telescope. That’s when Galileo Galilei, Thomas Harriot and others began drawing sunspots in detail and tracking how they moved and changed.

17 Dec 2012

Down to Earth With: Jacob Haqq-Misra

Jacob Haqq-Misra is all but addicted to music, which is why the astrobiologist balances his time between research and performing as a percussionist and vocalist with the psychedelic jam band, Mysterytrain.

18 Nov 2012