We cannot yet claim that the data covers the entire economy of Cambridge, because the company employment data is for the Cambridge companies’ global employment and we do not have data for sole traders, some elements of the public sector, and for employees of national and international companies with trading and research offices in Cambridge. Nevertheless, the growth trends over several years are strong indicators of the whole sub-regional economy’s growth and we expect to add further data later that may enable this claim to be made. The data will be updated at least annually.
A migraine is a form of vascular headache. Migraine headache is caused by a combination of vasodilatation (enlargement of blood vessels) and the release of chemicals from nerve fibers that coil around the blood vessels. During a migraine attack, the temporal artery enlarges. (The temporal artery is an artery that lies on the outside of the skull just under the skin of the temple.) Enlargement of the temporal artery stretches the nerves that coil around the artery and cause the nerves to release chemicals. The chemicals cause inflammation, pain, and further enlargement of the artery. The increasing enlargement of the artery magnifies the pain.
Surveys indicate that 90% of open clusters dissolve less than 1 billion years after formation, while only a tiny fraction survive for the present age of the Solar System (about billion years).  Over the next few hundred million years, the Hyades will continue to lose both mass and membership as its brightest stars evolve off the main sequence and its dimmest stars evaporate out of the cluster halo. It may eventually be reduced to a remnant containing about a dozen star systems, most of them binary or multiple, which will remain vulnerable to ongoing dissipative forces.