Michael Ormerod (British, 1947-1991). From American Photographs
This year is slated to be the planet’s warmest year on record. With global climate data from 11 of 12 months of 2024 tallied, EU climate monitor Copernicus estimates the global average temperature will be 1.60°C above the pre-industrial average, breaking the +1.48°C record set last year. In this Overview, people stay cool at a waterpark in Mesa, Arizona — one of the hottest places in the USA this year, with 70 days reaching a high temperature of at least 110°F (43°C).
33.387836°, -111.837699°
Source imagery: Nearmap
Sunrise in the Six Flags amusement park, flooded by Hurricane Katrina in 2005 and abandoned since then.
New Orleans, Lousiana - USA.
© Roberto Conte (2018)
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Xochicalco
Xochicalco in central Mexico was an important hilltop centre from the 8th century CE and was a rival and successor of Teotihuacán. Architecture at the site is closely connected to that of the Classic Maya, Teotihuacan, and Veracruz, and contact was also established with the Mixtec Oaxaca and Zapotec civilizations. Blending these various cultural elements to create their own idiosyncratic art and architecture, the Xochicalco culture probably went on to influence the later Toltec and all subsequent Mesoamerican civilizations. The site, like many contemporary hilltop centres, was abandoned at the end of the Epiclassic period, around 900 CE. Xochicalco is listed by UNESCO as a World Heritage Site.
Early Settlement
Founded c. 700 CE or even before, Xochicalco, 130 km southwest of Cacaxtla and perched above the Cuernavaca Valley, was built on a hill which was re-shaped by levelling and terracing certain areas to create an acropolis of four concentric terraces. A straight path on the southern side gives access from the valley floor. Although early pottery shares many similarities to that found elsewhere in central Mexico, there seems to have been very little outside contact in later times. Any links to the Maya seem to have been via the coast settlements, and the iconography in many relief carvings at Xochicalco has a strong Mayan and Teotihuacan influence.
Xochicalco was eventually fortified and contained three distinct areas containing regular plazas, sacred precincts, paved causeways, a large pyramidal platform, and an I-shaped ball-court, all oriented along the cardinal points. The large slanted wall ball-court is located in the centre of the site, and it may be the oldest such structure in central Mexico, whilst the western platform contains a sweat-bath consisting of several rooms with benches. Another feature of the site is the presence of caves in the hillsides which were used for storage and, in one case, as an underground observatory. This latter cave has a man-made shaft to the sky, through which, on just two days in the year, the sun shines directly down into the cave.
Rutshellir Cave, Iceland (by Job Savelsberg)
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