Plant sciences

Some of the best moments in my job as a Weizmann science writer are the times when a scientist I'm interviewing slips in a finding that shifts my understanding of how the world works. Not long ago, for instance, I was speaking with a researcher about his work on phytoplankton. Now, the fact that phytoplankton release about half of all the free oxygen on the planet should be an eye-opener to anyone, and a reminder of the importance of ocean health. (But that wasn't the surprise.) Dr. Assaf Vardi researches the chemicals that phytoplankton produce to communicate. Of course, all sorts of…