2021 Top Ten of Polemic for Nature

Cathode ray
Cathode rays are streams of electrons observed in discharge tubes. If an evacuated glass tube is equipped with two electrodes and a voltage is applied, glass behind the positive electrode is observed to glow, due to electrons emitted from the cathode. They were first observed in 1869 by German physicist Julius Plücker and Johann Wilhelm Hittorf, and were named in 1876 by Eugen Goldstein Kathodenstrahlen, or cathode rays. In 1897, British physicist J. J. Thomson showed that cathode rays were composed of a
Creative Commons
Creative Commons (CC) is an American non-profit organization and international network devoted to educational access and expanding the range of creative works available for others to build upon legally and to share. The organization has released several copyright licenses, known as Creative Commons licenses, free of charge to the public. These licenses allow authors of creative works to communicate which rights they reserve and which rights they waive for the benefit of recipients or other creators. An
Blue whale penis
The blue whale has the largest penis in the animal kingdom. It is commonly cited as having an average penis length of 2.5 metres to 3 metres (9.8 ft) and a diameter of 30 centimetres (12 in) to 36 centimetres (14 in
Large White pig
The Large White is a British breed of domestic pig. It derives from the old Yorkshire breed from the county of Yorkshire, in northern England
Rutherford model
The Rutherford model was devised by the New Zealand-born physicist Ernest Rutherford to describe an atom. Rutherford directed the Geiger–Marsden experiment in 1909, which suggested, upon Rutherford's 1911 analysis, that J. J. Thomson's plum pudding model of the atom was incorrect. Rutherford's new model for the atom, based on the experimental results, contained new features of a relatively high central charge concentrated into a very small volume in comparison to the rest of the atom and with this
The Son of Man
The Son of Man is a 1964 painting by the Belgian surrealist painter René Magritte. It is perhaps his best-known artwork
The Five Ages of the Universe
The Five Ages of the Universe is a popular science book written by Professor Fred Adams and Professor Gregory P. Laughlin about the future of an expanding universe first published in 1999
German Shepherd
The German Shepherd is a breed of medium to large-sized working dog that originated in Germany. According to the FCI, the breed's English language name is German Shepherd Dog. The breed name was officially known as the "Alsatian Wolf Dog" in the UK from after the First World War until 1977 when its name was changed back to German Shepherd. Despite its wolf-like appearance, the German Shepherd is a relatively modern breed of dog, with its origin dating to 1899
List of states of matter
States of matter are distinguished by changes in the properties of matter associated with external factors like pressure and temperature. States are usually distinguished by a discontinuity in one of those properties—for example, raising the temperature of ice produces a discontinuity in an increase in temperature. The four classical states of matter are usually summarized as solid, liquid, gas, and plasma. In the 20th century however, increased understanding of the more exotic properties of matter
Pivot joint
In animal anatomy, a pivot joint is a type of synovial joint whose movement axis is parallel to the long axis of the proximal bone, which typically has a convex articular surface