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da Vinci’s “Codex on the Flight of Birds” will be on view at Air and Space Museum, Sept. 13-Oct. 22.

One of Italy’s greatest treasures, Leonardo da Vinci’s Codex on the Flight of Birds, will be exhibited at the National Air and Space Museum from […]

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Giant panda Mei Xiang gives birth at Smithsonian’s National Zoo

Giant panda Mei Xiang (may-SHONG) gave birth to a cub at the Smithsonian’s National Zoo in Washington, D.C. at 5:32 p.m., Friday, Aug. 23. The […]

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American bison return to the Smithsonian’s National Zoo

  In honor of its 125th anniversary, the Smithsonian’s National Zoo is once again home to American bison, the animal that began the Zoo’s living […]

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The State of the Birds: Q&A with Peter Marra

The nation’s top bird science and conservation groups have come together to publish The State of the Birds 2014—the most comprehensive review of long-term trend […]

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Polar-orbiting satellite captures amazing X-ray footage of solar eclipse

The moon passed between the Earth and the sun on Thursday, Oct. 23. While avid stargazers in North America looked up to watch the spectacle, the […]

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Museum specimens come to life in new “Skin and Bones” mobile app

The Smithsonian’s National Museum of Natural History released a new mobile app “Skin and Bones” Jan. 13. The free app is available for download in […]

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“Outside the Spacecraft,” a new exhibition at the Air and Space Museum

Get a look behind the scenes as we installed “Outside the Spacecraft: 50 Years of Extra-vehicular Activity,” a new exhibition on view at the Museum […]

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Studying migratory connectivity of shorebirds on the Texas coast

Scientists from the Migratory Bird Center of the Smithsonian Conservation Biology Institute are using transmitters to track the movements of shorebirds–the long-billed curlew, red knot, […]

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New Amphibian Rescue Lab in Panama

The Smithsonian Conservation Biology Institute and the Smithsonian Tropical Research Institute are working together as part of the Panama Amphibian Rescue and Conservation Project have […]

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Red Panda Cubs Born at Conservation Biology Institute

Seven red panda cubs were born at the Smithsonian Conservation Biology Institute! The cubs were born to mothers Nutmeg, Regan and Leo Mei. Keepers are […]

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Video: Protecting songbirds by Better Understanding their Migratory connectivity

Identifying and understanding the migratory connectivity of birds throughout an entire annual cycle (not just the times of year they are in your back yard), […]

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Bioblitz!! Cobia Island, Panama

A team of some 30 taxonomists, many from the Smithsonian Tropical Research Institute, accompanied by renowned photographer Christian Ziegler, conduct a week-long bioblitz on Cobia […]

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Why Birds Really Matter: Catherine McKenna

Catherine McKenna, Canada’s Minister of the Environment and Climate Change, talks about the importance of bird conservation and why birds really matter. Step outside your […]

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Eld’s Deer Fawn Born at the Smithsonian Conservation Biology Institute

Oct. 4, 2016—The Smithsonian Conservation Biology Institute welcomed an Eld’s deer fawn Oct. 2 around 4:30 p.m. Both the fawn and her mom Sienna appear […]

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Folklife Festival Big Top Rises in D.C.

The circus is coming to the Smithsonian! The Big Top went up on the National Mall this week in preparation for the 2017 Smithsonian Folklife […]

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  • History & Culture
  • Video
  • Smithsonian Folklife Festival

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Celebrating Ambika’s 56 years at National Zoo

On World Elephant Day–Saturday, Aug. 12, 2017–the Smithsonian’s National Zoo celebrated Ambika the elephant’s 70th birthday. Hear her keepers of more than 30 years talk […]

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Kids’ video: “Red Bird” – Dan Zanes & Friends

“Red Bird” from Dan Zanes and Friends’ album ‘Lead Belly, Baby’ featuring Ashley Phillips and Shareef Swindell, Smithsonian Folkways Recordings. To learn more click here: […]

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  • History & Culture
  • Video

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Hummingbirds dodge and weave

Tweaks in muscle and wing form give different hummingbird species varying levels of agility. The deft turns of hummingbirds in flight, as shown in a […]

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Firefox. Earlier version for 32 bit os?




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Namibian specimens come to the herbarium of the National Museum of Natural History

Dried specimens of nearly 800 flowering plants were acquired by the Botany Department of the Smithsonian’s National Museum of Natural History from the National Botanical Research Institute in Windhoek, Namibia, Africa. The collection includes nearly 160 specimens from the Compositae, or sunflower family.

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A well-defended territory is what some female hummingbirds find most attractive in a mate

What they observed was unique among all bird species: successful male caribs maintained and defended territories with nectar supplies that were two to five times greater than their daily needs and also isolated part of their crop for the exclusive feeding rights of visiting females.

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Fossil reveals 48-million year history of zombie ants

A 48 million-year-old fossilized leaf has revealed the oldest known evidence of a macabre part of nature – parasites taking control of their hosts to turn them into zombies.

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Potential biofuel pest, the switchgrass moth, under renewed scrutiny of entomologists

For the first time researchers from the Smithsonian, South Dakota State University and the University of Nebraska described the immature stages of the switchgrass moth, first collected in Denver in 1910.

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First rainforests arose when plants solved their plumbing problem

A team of scientists, including several from the Smithsonian Institution, discovered that leaves of flowering plants in the world's first rainforests had more veins per unit area than leaves ever had before.

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“Extinct” birds reappear in rainforest fragments in Brazil

Bird species in rainforest fragments in Brazil that were isolated by deforestation first disappeared and then reappeared during the next quarter-century.

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Primitive, bizarre, beautiful: New mite species reveal a lost world awaiting discovery

For centuries untold numbers of this tiny arachnid (cousin to spiders and ticks) have ended up in teapots, invisibly steeping alongside the leaves of the tea plant on which it lives.

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Sweet survival: Some birds have a sugar edge

For Smithsonian ornithologist Gary Graves it was a captivating spectacle. At an outdoor café in Kingston, Jamaica, Graves watched three mornings in a row as […]

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Climbing plants disturb carbon storage in tropical forests

Although useful to Tarzan, vines endanger tropical forests’ capacity to store carbon. In a major experimental study in Panama, Smithsonian researchers showed that woody vines, […]

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Blood-thirsty jungle horse-flies catch big chill from Smithsonian entomologist

With net in hand and eyes peeled, Mauren Turcatel spent two-weeks last October chasing blood-thirsty predators through the Amazon jungle of Brazil. One-by-one they appeared […]

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From Rochester to Polynesia, a simple cube unveils Earth’s dazzling biological diversity

Profound ideas don’t need to be complicated. A simple cube made of aluminum tubing, a centerpiece of a new exhibit “Life in One Cubic Foot,” […]

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Of mice and macchiato: Bird Friendly coffee gives a paw-up to small mammals as well

Finding a mouse in your morning coffee might give you an unwelcome jolt, but there’s a strong connection between small mammals, birds and the plantations […]

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Is This the Long-Sought Answer to the Question of Tropical Biodiversity?

Visitors to the tropics are amazed by the huge variety of colorful, complex and sometimes ferocious creatures living near the equator. Smithsonian scientists and colleagues […]

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Clean = Sexy for this Panamanian Bird

(A male golden-collared manakin cleans up his display area.) Few of us would find a marriage proposal made amidst dirty dishes and messy clutter particularly […]

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Study: Large shady forest plots essential to survival of post-fledgling songbirds during drought

According to a new study by biologists at the Smithsonian Migratory Bird Center and Virginia Tech the offspring of a certain songbird, the wood thrush, […]

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Crape myrtle trees aren’t native to the US, but hungry native birds still find them tasty

Each year from summer into fall, ornamental crape myrtle trees in the southern and central U.S. lay out a visual feast of vibrant flowers in […]

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Comparison of two MnIVMnIV-bis-μ-oxo complexes, {[MnIV{N4(6-Me-DPEN)}]2(μ-O)2}2+ and {[MnIV{N4(6-Me-DPPN)}]2(μ-O)2}2+

The addition of tert-butyl hydro­peroxide (tBuOOH) to two MnII complexes, differing by a small synthetic alteration from an ethyl to a propyl linker in the ligand scaffold, results in the formation of the high-valent bis-oxo complexes, {[MnIV{N4(6-Me-DPEN)}]2(μ-O)2}2+ (1) and {[MnIV{N4(6-Me-DPPN)}]2(μ-O)2}2+ (2).




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Crystal structure and Hirshfeld surface analysis of 4,4'-(propane-1,3-diyl)bis(4H-1,2,4-triazol-1-ium) penta­fluorido­oxidovanadate(V)

In the structure of the title salt, second-order Jahn–Teller distortion of the coordination octa­hedra around V ions is reflected by coexistence of short V—O bonds and trans-positioned long V—F bonds, with four equatorial V—F distances being inter­mediate in magnitude. Hydrogen bonding of the anions is restricted to F-atom acceptors only, with particularly strong N–H⋯F inter­actions [N⋯F = 2.5072 (15) Å] established by axial and cis-positioned equatorial F atoms.




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Co-crystal structure, Hirshfeld surface analysis and DFT studies of 3,4-ethyl­ene­dioxy­thio­phene solvated bis­[1,3-bis­(penta­fluoro­phen­yl)propane-1,3-dionato]copper(II)

The title complex, Cu(L)2 or [Cu(C15HF10O2)2], comprising one copper ion and two fully fluorinated ligands (L−), was crystallized with 3,4-ethyl­ene­dioxy­thio­phene (EDOT, C6H6O2S) as a guest mol­ecule to give in a di­chloro­methane solution a unique co-crystal, Cu(L)2·3C6H6O2S.