Lead Stories

Nation
5:42 am
Mon December 15, 2014

WATCH: Local Coverage Of Australian Hostage Siege

Originally published on Mon December 15, 2014 1:38 pm

A gunman was holding an unknown number of hostages at a downtown chocolate cafe in Sydney. Early on Tuesday morning, Australian time, police moved in and said the siege was over.

We're following the news here. Below is a feed of the Australian Broadcasting Corporation's news coverage. ABC is the country's national public broadcaster:

World
5:38 am
Mon December 15, 2014

3 People, Including Gunman, Killed In Sydney Cafe Siege

A hostage runs to armed tactical response police officers for safety after she escaped from a cafe under siege at Martin Place in the central business district of Sydney, Australia, on Monday.
Rob Griffith AP

Originally published on Mon December 15, 2014 2:13 pm

(Last updated at 1:48 p.m. ET.)

Just as the siege entered its second day, police stormed a chocolate shop in downtown Sydney, ending a more than 12-hour hostage standoff that began during morning rush hour.

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Science and the Environment
5:11 pm
Fri December 12, 2014

CO2 and the History of Weighing Smoke

The science of weighing carbon gas is tied to Sir Walter Raleigh's attempt to weigh smoke after a wager with Queen Elizabeth I.
Courtesy of Louis Vest, flickr.com/photos/oneeighteen

Originally published on Fri December 12, 2014 11:36 am

Officials from countries around the word have met for the last two weeks in Lima, Peru to talk global climate change.   At the heart of those talks is how to limit billions of tons of CO2 that are pumped into the atmosphere every year from coal burning power plants.  

But how do we keep track of the CO2 we’re releasing? And just how do we weigh something that floats in the first place? 

It turns out there is a venerable history to the science of weighing smoke.

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Texas News
5:10 pm
Fri December 12, 2014

The First All-Drone Airport is Opening in Texas

A Grey Shadow drone, the same type of aircraft slated to be housed at a new complex in El Paso's Fort Bliss.
Flickr user Greg Goebel, https://flic.kr/ps/z7irw

Originally published on Fri December 12, 2014 2:33 pm

In Fort Bliss military base in El Paso, Texas a new airport is being built. But it won't cater to pilots or offer any amenities common to the typical airstrip –because this one is being built exclusively to house the U.S Army aerial drones.

If an aerial drone fleet housed in a state of the art bunker sounds like something out of a science fiction movie, you're not far off. The Texas Standard's David Brown speaks with John Horgan, writer for the Scientific American online and teacher at the Stevens Institute for Technology

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Politics
4:58 pm
Fri December 12, 2014

Texas Has Most Hazardous Chemical Plants In U.S.

Jill Ament

After the 2013 fertilizer explosion in West, President Obama issued an executive order to make chemical facilities across the country safer. But since then, little has been done to secure those facilities and according to a Congressional report, Texas has the highest number of hazardous chemical plants in the nation.


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