Posts by Bonnie Denmark

Bonnie Denmark holds an MA in linguistics and teacher certification in English, ESL, and Spanish. She has devoted her professional life to educational and accessibility issues as a computational linguist, multimedia curriculum developer, educator, and writer. She has also worked nationally and internationally as a language instructor, educational technology consultant, and teacher trainer. Bonnie joined the Visionlearning team as a literacy specialist in 2011, assisting the project by developing comprehension aids for science modules and creating other STEM learning materials.

(26) results in Blog

NASA’s New Horizons spacecraft sent this image of Pluto taken on July 13, 2015, when the spacecraft was still almost half a million miles (768,000 kilometers) from the surface. The view is dominated by a large, bright heart-shaped feature, now unofficially named the Tombaugh Regio in honor of the American astronomer who discovered Pluto in 1930. The feature measures approximately 1,000 miles (1,600 km) across. Credits: NASA/APL/SwRI

July 20, 2015

New Horizons brings Pluto up close and personal

All eyes are on Pluto, the latest darling of our galaxy. On the morning of July 14, 2015, the New Horizons spacecraft came within 7,750 miles of Pluto in a historic data-gathering flyby. At a brisk 31,000...

Discarded cigarette butts, the most common environmental waste product, attract egg-laying mosquitoes. (Wikimedia Commons)

June 28, 2015

Cigarettes kick butt in mosquito control

What happens to the 6 trillion cigarettes smoked around the world every year? About two-thirds of them end up tossed into the environment. Besides being non-biodegradable, smoked cigarette butts contain 7,000 chemicals, including at least 69...

512px-B_vitamin_supplement_tablets

May 20, 2015

Fighting Skin Cancer with Vitamin B3

May is National Skin Cancer Awareness Month, so what better time to announce the results of a promising new study by Australian researchers: An inexpensive vitamin pill reduced new occurrences of the most common types of...

Methicillin-resistant Staphylococcus aureus (MRSA), shown in pink. Photo credit: National Institute of Allergy and Infectious Diseases (NIAID)

April 8, 2015

MRSA meets its medieval match

In his 1945 Nobel Prize speech, Alexander Fleming warned that misusing antibiotics would lead to resistance in microbes. Fast forward 70 years and zoom in on MRSA: It’s contagious, it’s dangerous, and it resists the antibiotics...

SONY DSC

January 20, 2015

Copper shines in fight against germs

From centuries-old time capsules to modern medical centers, copper shines as the metal of choice to preserve and protect. Case in point:  A time capsule first buried in 1795 by Paul Revere and Samuel Adams was...

Claude Monet. London, Houses of Parliament. The Sun Shining through the Fog, 1904, in the Musée d'Orsay , Paris. (Public Domain)

December 3, 2014

The Great Smog of ’52: Environmental Disasters in History

Fog as thick as pea soup is nothing new to Londoners. But on December 5, 1952, a dense, grimy cloud of fog descended on London, immobilizing the city and causing more than 4,000 deaths over a...

Weapon shaft in Yukon ice patch (Credit: Yukon Government)

October 24, 2014

Warming world uncovers frozen past

What’s that smell? If you are on an ice patch in the Yukon Territory in Canada, the answer might be millennia-old caribou dung. Weapon shaft in Yukon ice patch (Credit: Yukon Government) In 1997, sheep hunters...

Agujero_en_la_capa_de_ozono_2008_crop

September 16, 2014

Good news on ozone layer should spur climate action

For the first time since 1980, the ozone layer that shields us from harmful radiation is repairing itself after being eaten away over decades by human-produced chemicals. The good news comes just in time to celebrate...

Sinkhole downstream from Mosul Dam (Credit: Wikimedia Commons, US Army Corps of Engineers)

August 25, 2014

Inside the science of sinkholes

Sinkholes aren’t new, but they certainly make news, causing millions of dollars of damage, contaminating water supplies, and even claiming lives. This latest monster under the bed appears often without warning and with potentially catastrophic results, as...

A reviewer at the National Institutes of evaluates a grant proposal. (Center for Scientific Review, National Institutes of Health)

July 23, 2014

Peer review: New approaches to an old system

A scientist’s reputation and funding for research can hinge on recommendations by other scientists in the centuries-old peer review process. To ensure a credible body of scientific knowledge, research papers and proposals are evaluated by other...