Triathletes swim during an Ironman event in Taupō, New Zealand, on Saturday, March 1, 2025. (Photo by Phil Walter/Getty Images)

Devotees pour water on a revered Bodhi tree at Shwedagon Pagoda to mark Buddha's Birthday, which falls on the Full Moon Day of Kasone, in Yangon on May 11, 2025. (Photo by Sai Aung Main/AFP Photo)

Nick Uhlig and Philipp Oettel race alongside Lukas Erlecke and Leon Freygang during the opening round of the German sidecar championship at the 58th ADAC Motocross in Schopfheim, Deutschland on June 1, 2025. (Photo by Grant Hubbs/IMAGO via Avalon)

A Pelican attempts to take a persons belongings while they are sat in St James' Park, London on Monday, August 11, 2025. Temperatures will soar above 30°C in parts of the UK in the coming days, with another heatwave possible in some areas. (Photo by Yui Mok/PA Images via Getty Images)

Members of the Washington Commanders Command Force dance during a timeout against the Seattle Seahawks during the second half at Northwest Stadium in Landover, Maryland on November 2, 2025. (Photo by Geoff Burke/Reuters)

Bujang, a 35-year-old male orangutan rescued from a circus in Sumatra, washes his face on a sanctuary island surrounded by a river where non-releasable orangutans are protected for life at the Samboja Lestari Orangutan Rehabilitation Center run by the non-profit Borneo Orangutan Survival (BOS) Foundation in Samboja, East Kalimantan, on July 12, 2024. (Photo by Yasuyoshi Chiba/AFP Photo)

Ravers dance around Love Mobiles during the 22nd edition of the Lake Parade in Geneva, Switzerland, 20 July 2024. (Photo by Salvatore Di Nolfi/EPA/EFE)

“Cassowaries are large, flightless birds related to emus and (more distantly) to ostriches, rheas, and kiwis”, writes Olivia Judson in the September issue of National Geographic magazine. How large? People-size: Adult males stand well over five foot five and top 110 pounds. Females are even taller, and can weigh more than 160 pounds. Dangerous when roused, they’re shy and peaceable when left alone. But even birds this big and tough are prey to habitat loss. The dense New Guinea and Australia rain forests where they live have dwindled. Today cassowaries might number 1,500 to 2,000. And because they help shape those same forests – by moving seeds from one place to another – “if they vanish”, Judson writes, “the structure of the forest would gradually change” too. (Photo by Christian Ziegler/National Geographic)