I returned home from Brighton very late last night after celebrating with a group of close friends, and memories of the beach, the sparklers we lit, the twilight and our group dances are fresh in my memory. The sun feels too bright for these memories! In the satellite image, two swirling cyclones curve over the Atlantic and northern Europe, and I am reminded of the von Kármán vortex streets, or repeated patterns of swirling vortices, described by Esther Leslie in her essay on 'Fog, Froth and Foam': 'stress factors on a curve, the agitation of the air, clouds, the wind...'