Ertl

This year's Nobel Laureate in chemistry, Gerhard Ertl, is receiving the award because he has revealed how chemical reactions occur when the molecules of a gas hits a solid surface.

The Nobel Prize in Chemistry 2007 - Presentation Speech 2007

The approach developed by Ertl is based not least on his studies of the Haber-Bosch process, in which nitrogen is extracted from the air for inclusion in artificial fertilizers.

The Nobel Prize in Chemistry 2007 - Press Release 2007

Mr.A. SMITH: The longer you leave it, as the minutes tick by after the public announcement, it just gets busier and busier, and I'm eternally grateful for Gerhard Ertl for giving me any time at all when he was waiting for Chancellor Merkel.

You've Won The Nobel Prize -- Wait, Don't Hang Up! 2010

Mr.A. SMITH: The longer you leave it, as the minutes tick by after the public announcement, it just gets busier and busier, and I'm eternally grateful for Gerhard Ertl for giving me any time at all when he was waiting for Chancellor Merkel.

You've Won The Nobel Prize -- Wait, Don't Hang Up! 2010

Mr.A. SMITH: The longer you leave it, as the minutes tick by after the public announcement, it just gets busier and busier, and I'm eternally grateful for Gerhard Ertl for giving me any time at all when he was waiting for Chancellor Merkel.

You've Won The Nobel Prize -- Wait, Don't Hang Up! 2010

Mr.A. SMITH: The longer you leave it, as the minutes tick by after the public announcement, it just gets busier and busier, and I'm eternally grateful for Gerhard Ertl for giving me any time at all when he was waiting for Chancellor Merkel.

You've Won The Nobel Prize -- Wait, Don't Hang Up! 2010

Gretchen Ertl for The Wall Street Journal For all the horror stories, some parents are mounting a defense of the sleepover, if done right.

Say 'Yes' to the Sleepover, Mom Molly Baker 2012

Mr.A. SMITH: The longer you leave it, as the minutes tick by after the public announcement, it just gets busier and busier, and I'm eternally grateful for Gerhard Ertl for giving me any time at all when he was waiting for Chancellor Merkel.

You've Won The Nobel Prize -- Wait, Don't Hang Up! 2010

Gretchen Ertl for The Wall Street Journal Grace's mom, Dana Zangari, gives her a hug before leaving her for the night.

Say 'Yes' to the Sleepover, Mom Molly Baker 2012

Mr.A. SMITH: The longer you leave it, as the minutes tick by after the public announcement, it just gets busier and busier, and I'm eternally grateful for Gerhard Ertl for giving me any time at all when he was waiting for Chancellor Merkel.

You've Won The Nobel Prize -- Wait, Don't Hang Up! 2010