Reconstruction of past backyard skating seasons in the Original Six NHL cities from citizen science data

This study conducted linear and change-point analyses of historical trends since 1942 in the length and number of days suitable for skating on backyard rinks in the “Original Six” National Hockey League cities of Boston, Chicago, Detroit, Montreal, New York, and Toronto. Analysis is based on the relationship between ambient air temperatures and the probability of skating, using thresholds identified through the RinkWatch citizen science project. In all cities, coefficient estimates suggest the number of high-probability skating days per winter is declining, with easternmost cities displaying notable declines and growing inter-annual variability in skating days in recent decades. Linear analysis shows a statistically significant decline in Toronto, with a step-change emerging in 1980, after which there is on average one-third fewer skating days compared with preceding decades. The outdoor skating season trends towards later start dates in Boston, Montreal, New York, and Toronto. Future monitoring of outdoor rinks provides an opportunity for engaging the public in identification of winter warming trends that might otherwise be imperceptible, and for raising awareness of the impacts of climate change.     

Philip of Harvengt's Life of the Blessed Virgin Oda

For every famous author of the twelfth-century renaissance, there are numerous lesser-known writers. Despite being overshadowed by more brilliant scholars or those closer to the centre of important events, their voices add depth to the study of the intellectual and religious history of this period. A founding member of one of the earliest Premonstratensian houses, a highly-educated and prolific author, much in demand as a hagiographer, and a vigorous defender of the clerical order, Philip of Harvengt is one such writer, and a worthy subject for study. This article examines one of his hagiographical works, the Life of the Blessed Virgin Oda, a nun attached to his own house, whom he portrays as a martyr. It analyses the predominant and recurrent concerns and ideals expressed in the Life, particularly the claim to martyrdom, and the means by which this is expressed.     

A zoomorphic sickle terminal from the Natufian site of Wadi Hammeh 27 in Jordan

Excavations at the Natufian site of Wadi Hammeh 27 in Jordan undertaken in 2014 led to the discovery of several new portable art pieces, including the representation of an ungulate mammal (RN 140226), probably intended as a gazelle, carved in the round from bone. The small object was extensively damaged by fire and had become separated at its neck from longer pieces of fragmented, burnt bone lying distally to it. This configuration and the style of the animal head leads us to interpret the piece as the decorated terminal of a bone sickle haft. The piece is unusual in that is it is one of the few figurative Natufian art pieces with incised geometric decoration added to its surface. Its finding extends the distribution of the ‘gazelle-headed’ sickle haft from Mount Carmel, where three well-known examples were unearthed in the early twentieth century, to the northern Jordan Valley. The piece adds to the limited repertoire of zoomorphically rendered Natufian artefacts associated with plant gathering and processing.