This week in numbers

-81.7 degrees celsius. The temperature at Antarctica’s Dome Fuji Station (2400km from Scott Base). That’s almost -8C difference from the previous coldest temperature recorded, which was -89.6 Cat the Vostok station in 1983. July is typically the coldest month, so it may drop.

13 The Queen met her 13th US president when she had tea with Joe and Jill Biden at Windsor Castle. Lyndon B. Johnson was the only sitting president she didn’t meet.

790 schools are participating in the Ka Ora, Ka Ako/healthy school lunches programme, which allows schools to offer students a free lunch. That will expand to 964 schools and kura by the end of the year, more than 25 per cent of students.

50 years since the release of the Pentagon Papers, classified documents detailing how the US got mired in a long, costly war in Vietnam. Analyst Daniel Ellsberg leaked portions of the 7000-page report to the New York Times, which began publishing excerpts on June 13, 1971.

1 huge spider web blanketed bushland in Victoria, Australia after heavy rain and flooding. Thousands of spiders moved to higher ground to escape the saturated land, spinning giant cobwebs, one more than 1km long, to shelter themselves from the damp.

3.8 billion dollars donated to 286 organisations working on racial inequality, the arts and education by MacKenzie Scott, ex-wife of Amazon founder Jeff Bezos. An author, she is the world’s 22ndrichest person, worth more than $83b, according to Forbes.