Next on NOVA: "Dimming the Sun"

http://www.pbs.org/nova/sun

Broadcast: April 18, 2006

(NOVA airs Tuesdays on PBS at 8 p.m. Check your local listings as
dates and times may vary.)

"Dimming the Sun" investigates the discovery that the sunlight
reaching Earth has been growing dimmer, which may seem surprising
given all the international concern over global warming. At first
glance, less sunlight might hardly seem to matter when our planet is
stewing in greenhouse gases. But the discovery of global dimming has
led several scientists to revise their models of the climate and how
fast it's changing. According to one recent and highly controversial
model, the worst-case warming scenario could be worse than anyone
has predicted. "Dimming the Sun" unravels this baffling climate
conundrum and the implications for Earth's future.

Here's what you'll find on the companion Web site:

Inquiry & Article

The Contrail Effect
Are vapor trails from aircraft influencing the climate, and if
so, should we worry?

The Producer's Story
Filmmaker David Sington offers his personal take on why many
people remain skeptical about global warming.

Time Line & Slide Show

Discoveries in Global Dimming
From an 18th-century volcanic eruption to a 21st-century
satellite, see what paved the way to our understanding of
this phenomenon.

Clean Air Technologies
Explore a handful of creative solutions to help reduce
pollution, like exhaust-eating algae and wind energy.

Also, a video preview of the program, Links & Books, the program
transcript, and a teacher's guide.

http://www.pbs.org/nova/sun