It’s a four-bedroom Grade II listed period farmhouse with beams and leaded windows in a village on the Bucklebury fringes.

Source: https://www.dailymail.co.uk/femail/article-12675009/James-Middleton-Alizee-Thevenet-welcome-baby.html?ns_mchannel=rss&ns_campaign=1490&ito=1490

Then an upward trend there with the elimination of leaded gasoline(and other stuff), up until relatively very recently.

Source: https://science.slashdot.org/story/23/03/13/2340229/online-tests-suggest-iq-scores-in-us-dropped-for-the-first-time-in-nearly-a-century?utm_source=rss1.0mainlinkanon&utm_medium=feed

While this is encouraging, leaded aviation fuel cannot be defended, must be eliminated and easy solutions are available.

Source: https://www.dailycamera.com/2023/11/28/guest-opinion-harry-ross-boulder-airport-must-make-unleaded-fuel-available-encourage-its-adoption/