The longtime New Yorker writer John McPhee is an influential teacher of writing, with bookshelves full of titles written by his former students. One of those students, David Remnick, talks with McPhee about the secret to his seminal “nature writing”: it’s all about people. Also, James Surowiecki speculates on the uncertain future of Brexit, a reporter forgets the code to a trove of critical data, and two schmucks take their ugly breakup public.