More warming in the decades ahead will mean even earlier blossom dates for cherry blossoms around the world, says Mark Gongloff for Bloomberg Opinion. NEW YORK: Earlier this month, a group of climate-change deniers gathered at the Hotel Washington in the US capital to celebrate their takeover of the government. Their conference’s theme was “Climate Realism Rising”. About a mile away, circling the Tidal Basin next to the National Mall, were thousands of Yoshino cherry trees in declining bloom.