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22 hours ago · F-type main-sequence star systems. v. t. e. The possibility of life on Mars is a subject of interest in astrobiology due to the planet 's proximity and similarities to Earth. To date, no proof of past or present life has been found on Mars.
1 day ago · Colorized scanning electron micrograph of a human neutrophil ingesting MRSA. Methicillin-resistant Staphylococcus aureus ( MRSA) is a group of gram-positive bacteria that are genetically distinct from other strains of Staphylococcus aureus. MRSA is responsible for several difficult-to-treat infections in humans.
4 days ago · bird flu, a viral respiratory disease mainly of poultry and certain other bird species, including migratory waterbirds, some imported pet birds, and ostriches, that can be transmitted directly to humans. The first known cases in humans were reported in 1997, when an outbreak of avian influenza A virus subtype H5N1 in poultry in Hong Kong led to ...
2 days ago · Circadian rhythm. A circadian rhythm ( / sərˈkeɪdiən / ), or circadian cycle, is a natural oscillation that repeats roughly every 24 hours. Circadian rhythms can refer to any process that originates within an organism (i.e., endogenous) and responds to the environment (is entrained by the environment).
2 days ago · Homo (from Latin homō 'human') is a genus of great ape that emerged from the genus Australopithecus and encompasses the extant species Homo sapiens (modern humans) and a number of extinct species (collectively called archaic humans) classified as either ancestral or closely related to modern humans, including Homo erectus and Homo ...
3 days ago · One of the most dangerous types of turbulence is caused by wind shear, which occurs when layers of air flow at different velocities. This can lead to abrupt changes in altitude and attitude ...
4 days ago · The Battle of Plassey, fought on June 23, 1757, was a significant event in Indian history that marked the beginning of British colonial rule in India. The battle occurred near the village of Plassey in Bengal, in present-day West Bengal, India. It was fought between the British East India Company, led by Robert Clive, and the forces of Siraj ud ...
