内容摘要：before slamming into the Thunder’s league-best defense in the first two games of this series.

before slamming into the Thunder’s league-best defense in the first two games of this series.

In Germany, where bees contribute 2 billion euros ($2.3 billion) in economic benefits, they’re key to pollinating the iconic yellow rapeseed fields that dominate the countryside in the spring.On Tuesday, around 400,000 bees in urban rooftop hives in the western city of Cologne — where the yellow fields flower — were busy at work making honey.

They seemed oblivious to the threats that endanger their survival. Scientists and bee experts like Matthias Roth, chairman of the Cologne Beekeepers Association, hope World Bee Day can raise awareness.For Roth, it’s crucial to protect both honey bees — like the ones in his rooftop hives — and wild species. His organization has set up nesting boxes in the hopes of helping solitary bees, which don’t form hives, but Roth fears that it’s not enough.“We must take care of nature,” Roth said Tuesday. “We have become far removed from nature, especially in cities, and we must take care of wild bees in particular.”

Fanny Brodersen reported from Berlin, and Michael Probst from Wehrheim, Germany. Kerstin Sopke and Stefanie Dazio contributed to this report from Berlin.The head of Columbia University alluded to the detention of Palestinian activist Mahmoud Khalil

Wednesday that drew loud boos and chants of “free Palestine” from graduating students.

The acting president, Claire Shipman, also alluded to the crackdown on foreign students by the Trump administration that has roiled the Ivy League school in recent months.Already, thousands of immigrants have notified federal authorities they plan to “self-deport,” according to the Department of Homeland Security. President Donald Trump has

by stoking fears of imprisonment, ramping up government surveillance, andand transportation out of the country.

allowed the Trump administration to strip legal protections from hundreds of thousands of Venezuelan immigrants, potentially exposing them to deportation. Without, even more families will weigh whether to leave the U.S., advocates say.