Observe the opening of beech leaf buds
Time-lapse video of beech (Fagus species) leaf buds opening, filmed over a period of one week. Leaf buds are stimulated to open by an increase in day length and temperature.
Video by Neil Bromhall; music Torna Piccola Mia by Armando Trovaioli (A Britannica Publishing Partner)
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NASAThe Boeing-built Lunar Roving Vehicle transported astronauts and equipment across the Moon during the Apollo 15, 16, and 17 missions.
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Science in Seconds (www.scienceinseconds.com) (A Britannica Publishing Partner)Ecological effects of light pollution.
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Encyclopædia Britannica, Inc.In many parts of the world, weather cycles through the four seasons like clockwork: spring, summer, autumn, and winter.
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Encyclopædia Britannica, Inc.It's not easy being green.
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Encyclopædia Britannica, Inc.An explanation of how structures inside the leaf contribute to plant coloration.
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Contunico © ZDF Studios GmbH, Mainz; Thumbnail © Citalliance/Dreamstime.comLearn why leaves of deciduous trees change colour in autumn.
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© MinuteEarth (A Britannica Publishing Partner)Molecules of chlorophyll, the key photosynthetic pigment in green plants, are arranged within a leaf such that they minimize the plant's need to transport incoming solar radiation while also increasing a leaf's photosynthetic output.
