Busy beavers capture carbon

 American Geophysical Union, July 2013

A few environmental problem-solvers have proposed drawing carbon out of the air and burying it to reduce greenhouse gasses and curb climate change. Maybe they could take some tips from nature’s own geoengineers – beavers – which have been sequestering carbon for thousands of years in the ponds and meadows created by their dams. A new study finds that, due to decreasing populations, much less carbon is getting tucked away by beavers than in the past.

Making scientists into scientific spokespeople

 American Geophysical Union, June 2013

How would you bring up scientific funding if you bumped into your senator while he’s buying cheese and cured meats at the local market? How about getting a stranger interested in safer alternatives to lead-based welding solder? Communicating science to lawmakers and laypersons is important, but scientists too often get tongue-tied talking with everyday folks.

Fuel Cells…in Space!

 Out of the Fog, April 2013

A basic fuel sell system starts with plain water (which, for those of you a bit rusty on your high school chemistry, is two hydrogen atoms bonded with an oxygen atom). Using an electrical current, such as from a solar panel, the water molecules can be broken up into oxygen gas and hydrogen gas. These two gasses are stored separately until power is needed—the larger the reserve tanks holding the gasses, the more power available later. Upping the pressure in the tanks compresses the gas down into a smaller volume, meaning more power potential in less space.

Top 5 Science Stories of 2012 (According to Reddit)

 Out of the Fog, January 2013

2012 was a big year for science. From tiny particles to worlds millions of miles away, there were a lot of science stories worth reading. Here is a compilation of the top five of the year, according to the point-score given by users of Reddit.com. For each major story I’ve made a useful infographic to give you some neat facts about that topic. Here’s to hoping 2013 is an even better year for science!

Building a Better Battery

 Inside Science, December 2012

Lithium-ion batteries generate electricity when tiny charged lithium atoms move from a negatively charged electrode to a positively charged one. As the battery charges, the lithium atoms move in the opposite direction. The problem is that with each cycle of charging and discharging, the battery’s electrodes degrade and the battery’s capacity drops. To fix this dying battery dilemma, scientists need to see what’s happening inside the battery in realtime at a resolution of one billionth of a meter — something that hasn’t been possible until just recently.

Pluto probe peril

 Out of the Fog, December 2012

As the Curiosity rover safely studies rocks on the surface of Mars, a NASA mission on route to Pluto may find itself on a treacherously rocky path. NASA announced last month that the $650 million New Horizons space probe’s planned trajectory during its July 2015 flyby could turn into a collision course with unknown moons and debris circling the dwarf planet—an unfortunate end to the mission’s three-billion-mile cosmic road trip.

Mosquito Flight Fails in Fog

 Inside Science, November 2012

Mosquito bites are a scourge to campers and spread deadly malaria infections. While nets and insecticides have long been the answer to blocking the winged menaces, researchers have discovered a simple way of grounding mosquitoes: fog.