dr. david grinspoon today that is an honest-to-goodness astrobiologists, an award-winning science communicator and a prize-winning author. his latest book. >> we are are leaving this event for live coverage of the u.s. senate for a brief pro forma session. >> the senate will come to order. the clerk will read a communication of the senate washington d.c. july 3, 2017 to the senate. under the provisions of her one paragraph 3 standing rules of the senate i hereby impart the honorable marco rubio senator from the state of florida to perform the duties of the chair signed orangey hatch president pro tempore. under the previous order the senate stands adjourned until 9:00 a.m. on thursday, july 6, 2017. >> the senate will be back for legislative business a week from today live of 4:00 p.m. interest to confirm naomi row two run the office of very literary affairs scheduled for that champagne is always watch the senate life here on c-span2. after biologist and author david grinspoon reports on the anthropocene things of the ers history impacting humans will have and have had on the planet. >> for a