Posts by 

Deborah Byrd

Peak water limits with Peter Gleick

Our water use has the potential to reach peak limits. Water expert Peter Gleick said we've already hit peak limits in many parts of the world. Read more about peak water.

Giant black holes and their eating habits

Astrophysicists have scrutinized X-rays from accretion disks surrounding eight black holes and confirmed differences between black hole observation and theory.

Hunger and climate change on collision course

Study shows how global warming might affect hundreds of millions of people already in danger of famine. Read more on hunger and climate change.

Do white holes exist? Have we seen one?

Are some gamma-ray bursts - such as GRB 060614 - a sign that white holes exist after all?

Human world: humans and Earth are linked

What is a human world? When the first images of Earth were returned from space, we all realized that we live on a water planet. We and the Earth are linked.

Martin Haigh on technologies for the world’s energy future

When it comes to technology and innovation, no one can predict what the future will bring. Martin Haigh with Shell is looking to possible alternate futures for global energy as the 21st century progresses.

Tornado outbreak in southern U.S. was deadliest day ever

With more than 300 dead and the death toll still rising, April 27, 2011 ranks as one of the nation's deadliest tornado days.

Oil exploration and development in the Arctic

Robert Blaauw of Shell International participated in the Commission on Arctic Climate Change, which issued a report on oil exploration in spring 2011.

Dramatic video of when tornado struck St. Louis airport

A video shows St. Louis International Airport on Friday, April 20 as a tornado struck. Record numbers of tornadoes expected in the U.S. midwest and southeast.

Wim Thomas on energy supply and demand

From Wim Thomas: Energy demand is growing, as emerging economies demand their share. How might global energy supply and demand come to balance in the future?