The ring-tailed lemur is a large
strepsirrhineprimate. It belongs to
Lemuridae, one of five lemur families. Like all lemurs, it is endemic to
Madagascar, living in the
gallery forests and spiny
scrubland in the southern regions of the island. It is
omnivorous,
diurnal and highly social, living in groups of up to 30 individuals. Communities are
matriarchal, a trait common among lemurs. Like other lemurs, this species relies strongly on its sense of smell and marks its territory with scent glands. As one of the most vocal primates, the ring-tailed lemur uses numerous
vocalizations such as
alarm calls. Experiments have shown that, despite the lack of a large brain, the ring-tailed lemur can organize sequences, understand basic
arithmetic operations and preferentially select tools based on functional qualities. Despite being listed as
Near Threatened by the
IUCN Red List and suffering from
habitat destruction, the ring-tailed lemur reproduces readily in captivity and is the most populous lemur in
zoos worldwide, numbering more than 2000 individuals. It typically lives 16 to 19 years in the wild and 27 years in captivity. (more...)
Noctilucent clouds are the highest clouds in Earth's atmosphere, being bright
polar mesospheric clouds illuminated by the
Arctic sun from below the horizon, between latitudes of 50° and 70°. They are composed of
water ice crystals up to 100
nm across, forming most frequently in the northern summer at altitudes of 76 to 85 km (47 to 53 mi). The clouds form directly from water vapor and sometimes around dust: water may be produced from the reaction of
CH4 and
OH-, while the dust is believed to originate from
micrometeors and possibly volcanic particulate matter entering the
mesosphere. The clouds are detectable by
radar and the observed increase in these clouds serves as a possible indicator of climate change.
This Wikipedia is written in
English. Started in 2001 (2001), it currently contains
3,902,144 articles. Many other Wikipedias are available; some of the largest are listed below.
The ring-tailed lemur is a large
strepsirrhineprimate. It belongs to
Lemuridae, one of five lemur families. Like all lemurs, it is endemic to
Madagascar, living in the
gallery forests and spiny
scrubland in the southern regions of the island. It is
omnivorous,
diurnal and highly social, living in groups of up to 30 individuals. Communities are
matriarchal, a trait common among lemurs. Like other lemurs, this species relies strongly on its sense of smell and marks its territory with scent glands. As one of the most vocal primates, the ring-tailed lemur uses numerous
vocalizations such as
alarm calls. Experiments have shown that, despite the lack of a large brain, the ring-tailed lemur can organize sequences, understand basic
arithmetic operations and preferentially select tools based on functional qualities. Despite being listed as
Near Threatened by the
IUCN Red List and suffering from
habitat destruction, the ring-tailed lemur reproduces readily in captivity and is the most populous lemur in
zoos worldwide, numbering more than 2000 individuals. It typically lives 16 to 19 years in the wild and 27 years in captivity. (more...)
Noctilucent clouds are the highest clouds in Earth's atmosphere, being bright
polar mesospheric clouds illuminated by the
Arctic sun from below the horizon, between latitudes of 50° and 70°. They are composed of
water ice crystals up to 100
nm across, forming most frequently in the northern summer at altitudes of 76 to 85 km (47 to 53 mi). The clouds form directly from water vapor and sometimes around dust: water may be produced from the reaction of
CH4 and
OH-, while the dust is believed to originate from
micrometeors and possibly volcanic particulate matter entering the
mesosphere. The clouds are detectable by
radar and the observed increase in these clouds serves as a possible indicator of climate change.
This Wikipedia is written in
English. Started in 2001 (2001), it currently contains
3,902,144 articles. Many other Wikipedias are available; some of the largest are listed below.