Macular pigment optical density (MPOD) is the concentration of pigment in the macula, the central region of the retina. Macular pigment absorbs short-wavelength blue light and may reduce oxidative stress in the retina through its antioxidant properties. Primarily two carotenoids, lutein and zeaxanthin, with smaller amounts of meso-zeaxanthin, these pigments come from foods like green leafy vegetables and yellow or orange fruits and are deposited in the macula lutea, a retinal area responsible for high-acuity vision. In research on visual function and ocular health, studies examine its association with conditions such as age-related macular degeneration (AMD) and other retinal disorders.
Floods occur in Colombia due to heavy rainfall, deforestation, the destruction of high-mountain wetlands and savanna wetlands, and poor urban planning, which intensifies the overflow of major rivers such as the Magdalena, Cauca, and Sinú. The country has experienced severe flooding events, notably during the 2010–2011 rainy season and in November 2024, resulting in extensive damage, displacement, and economic losses. The floods affected 2.9 million people across 28 departments, with damages estimated at 2.5% of the country's GDP. In 2024, heavy rainfall impacted over 46,000 families in 186 municipalities across 27 departments, with the worst-hit regions including La Guajira, Huila, Chocó, Norte de Santander, and Cauca. In Chocó alone, more than 100,000 people, approximately 20% of the department's population, were affected, leading to the declaration of a state of calamity. Nationwide, torrential rains displaced over 90,000 individuals, particularly in the Pacific coast and Andean regions, causing landslides, infrastructure damage, and widespread flooding. Colombia ranks 10th globally in economic risk from multiple hazards, including floods, with damages from the 2010–2011 floods alone reaching $5.2 billion.
Kalubhar Tapu is an island located near the coast of Jamnagar, in the state of Gujarat, India. The island spans approximately 29.6 square kilometers, with a coastline of around 34.8 kilometers. The terrain is flat and low-lying, with a maximum elevation of 6 meters above sea level. A lighthouse, identified by the Amateur Radio Lighthouse Society as ARLHS IND-003, is also situated on the Island. Vegetation on the island is limited, with tree cover estimated to be around 46%. The soil composition is predominantly sandy and rocky, with patches of mangrove forests along the coastline.
Phuong Trach Tower is a proposed 600-meter skyscraper in Hanoi, Vietnam. Upon completion, it is expected to become the tallest building in the country. The tower will rise 108 stories and serve as the centerpiece of a $4.2 billion smart city development in the Dong Anh District. The project is a joint venture between Vietnam's BRG Group and Japan's Sumitomo Corporation.