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The U.S. Global Change Research Program's recently published Climate Science Special Report concludes global warming is "extremely likely" driven by human activity — specifically, humanity's greenhouse gas emissions. 236

The source said the witness told Mueller's team his impression was that Trump was serious about running back in 2014. Trump tweeted earlier this month that he "didn't know" that he was going to run for president in 2014. 230

The White House Correspondents’ Dinner is DEAD as we know it. This was a total disaster and an embarrassment to our great Country and all that it stands for. FAKE NEWS is alive and well and beautifully represented on Saturday night!— Donald J. Trump (@realDonaldTrump) April 30, 2018 283

The researchers analyzed concentrations of the mind-altering chemical THC and other compounds in the breast milk of 50 women who reported using marijuana. The women had children who ranged in age from newborns to toddlers older than 12 months.Between 2014 and 2017, the women provided 54 total breast milk samples, which were analyzed at the University of California, San Diego's Mommy's Milk lab, a human milk research biorepository. The women also reported in questionnaires whether they were exposed to marijuana, medications and other substances in the 14 days before their milk samples were collected.After analyzing the milk samples, the researchers found that THC was detectable in 34, or 63 percent, of the 54 samples. The average concentration of THC found in those samples was 9.47 nanograms per milliliter. The researchers also found five, or 9 percent, of the 54 samples had measurable concentrations of cannabidiol, another chemical in cannabis.The researchers then calculated how much THC an infant would ingest from that concentration.Taking into consideration breastfeeding frequency, quantity of milk ingested and other factors, the researchers estimated that a hypothetical 3-month-old, weighing 6.1 kilograms or 13 pounds, would ingest about 0.040 nanograms of THC per milliliter of milk."The question is, does it matter? ... Is it possible that even low levels in breast milk may have an effect on a child's neurodevelopment? And we don't know the answer to that," Chambers said.The study had some limitations, including that the researchers relied on the women to remember their marijuana use or exposure and then report that use. The researchers also did not test what levels of THC or other compounds were in the breastfed infants themselves, instead relying on their own estimates.However, Chambers said that more research is to come.The researchers are planning another study to better understand how cannabis exposure might be associated with neurobehavioral testing outcomes in children."That's a testable hypothesis and something that we want to move forward with trying to answer, because it's a critical question," Chambers said. 2159

The Stockton experiment runs through July 2020. Researchers expect to release their first round of data this fall, when the presidential campaigns are preparing for the Iowa caucuses and state primaries. 203