.
Add polar bear non-decline to the long list of climate alarms that the doomsters have got embarrassingly wrong.
Wednesday 21 June is the longest day of the year: wear something white tomorrow to acknowledge and celebrate the success of polar bears despite such low summer sea ice since 2007 that 2/3 of them were predicted to disappear.
White tie, white shirt, white socks work too. Keep cool and signal to the world that you love outstanding survivors of climate change, fat though they may be.
Global sea ice extent at 19 June 2018, well past the end of the intensive spring feeding period for polar bears:
Tallbloke's Talkshop 
Hmmm… my calendar says June 21st is today. Thursday!
[reply] yes, the author has slipped up there 😦
Hmmm! It’s the winter Solstice DownUnder…nothing white that’s warm enough. A nice polar bear coat would be welcome first thing in the morning. Our mins. have been varying between -2 and +1 or 2 or 3. We sometimes have -5/6C.
I’ve just remembered that I have a pair of cheap Tesco white gloves!
These Polar Bears are just enjoying the Summer sun, no ice in sight. Just think what Al Gore could do with this pic!
http://churchillpolarbears.org/2018/06/polar-bears-on-the-rocks/
This outfit do Polar Bear tours in conjunction with WWF, still offering a full programme so they haven’t run out of bears yet.
https://www.nathab.com/polar-bear-tours/
No polar bear references here, but…
Semiannual Variation of Geomagnetic Activity
C.T. RUSSELL AND R. L. MCPHERRON
As expected, the peak activity occurs in March and September, minimum activity in December and June.
http://www-ssc.igpp.ucla.edu/personnel/russell/papers/40/
Auroras are generally strongest at the equinoxes, weakest at the solstices. Since the Sun probably doesn’t know what time of year it is on Earth, the obvious inference would seem to be that Earth’s seasonally-changing orientation to the Sun is the key factor.