Have you ever wondered what happens to embryos left over after a successful round of in vitro fertilization? We explore the answer to this question and the many controversies it has spurred.
Have you ever wondered what happens to embryos left over after a successful round of in vitro fertilization? We explore the answer to this question and the many controversies it has spurred.

Forty years after the Apollo 11 launch, we look at the inspiring legacy of the lunar missions and talk to an astronomer about the potential for the next giant leap -- a mission to Mars.
What's the region doing to prepare for its future water needs? Rich Samuels tells us as we continue this year's Chicago Matters series, Beyond Burnham.

The transition to Digital Television is just one day away, and the FCC has some last minute advice. Christian Farr will join us once again to talk about making sure you are ready for the switch to digital.

There are just 30 days to go until the transition to digital TV. Christian Farr joins us to explain what you need to do to make sure you are ready on June 12th.

Christian Farr explains why some Chicago Tonight viewers are having issues with lip sync, in which the sound and video do not match on their television, and offers tips on how to fix the problem.

We learn how to explore the ocean floor with the man who created Google Earth. He also introduces us to some other new Google products.
Is the time ripe for high-speed passenger rail service between Chicago and St. Louis? Rich Samuels takes us for a ride as our "Chicago Matters" series continues.

The transition to digital television on June 12th is fewer than 90 days away. Christian Farr joins us once again with some updates and also tackles some viewer questions.

In our Chicago Matters series, we are profiling some of the area's most interesting innovators. We meet the man known as the father of "carbon trading," Richard Sandor.

What is Cloud Computing? It's not about using your PC on an airplane! Northwestern University's Kristian Hammond explains this vision for the future of the Internet.

TV stations across country, including WTTW, made the historic transition to digital broadcasting last Friday. Christian Farr tells us how it went in Chicago, and also answers some viewer questions.

A new approach to cancer treatment has emerged that emphasizes treating the patient, not the disease. We hear from the President of the American Society of Clinical Oncology on how this approach may change the course of cancer therapy for patients everywhere.
A controversy is raging over a proposed wind farm in DeKalb County. Rich Samuels tells us why as we continue this year's Chicago Matters series.
We meet a doctor whose innovative methods to train surgeons are changing the game at Northwestern University, and at more than a hundred other schools.
In our ongoing Chicago Matters series "Beyond Burnham," we explore how deconstruction is keeping reusable building materials out of landfills. Christian Farr talks with a Chicago-area contractor who wishes this demolition method was available years ago.

The Obama administration is placing an emphasis on technology and the nation's oldest laboratory is reaping the rewards. The new head of Argonne National Laboratory will be here to tell us more about his goals for the lab's future.