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finally to 64.89 billion baht, a

he best option" to save the debt-ridden Bangkok ▓Mass Transit Authority (AMTA) as well a▓s to overhaul the city's obsolete mass transit system.Survey: water pollution in Mt.▓ Qomolangma worsensKATH

Premiumspicion has always been around t

MANDU, April 22 (Xinhua) -- Water pollution in the south side of Mt. Qomolangma, also known as Mt. Everest, has worsened in recent yea

Ourgh price tag of the project,

rs because of t▓he influx of visitors and the increase inhum▓an waste, according to a survey conducted in Nepal. The survey, sponsored by the Hindukush Karakoram Himalaya Partnership Project and the Nepal Academy of Science and Technolo▓gy, was carried out in Sagarmatha National Park an

y the m▓aintenance fees,

d its Buffer Zone (SNPBZ) of Nepal, ▓some 130 km east of

Nepali capital Kathmandu, in 2007 and 2008. The survey on "Impacts of Tourism in t▓he SNPBZ" was carried out by Professor PK Jha, in cooperation with researchers NP Ghimire and BB Shrestha of the Central Depar▓tment of Botany, Tribhuvan University of Nepal, according to▓

local newspaper The Himalayan Times on Wednesday. According to

the research, bacterial contami▓nation was recorded in 13 percent water samples and one sa▓mple of mineral water. "E coli and Streptococcus faecolies were found in the waters ofKhumbu Valley," Dr. Jha said. Dudhkoshi, Bhotekoshi, Imja Kho▓la and Gokyo lake are the major water bodi

which is 2,250

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es in the south side of Mt. Qomolangma. Sweet potatoes may originate in Asia, not in the AmericasSweet potatoe

bus per da

s may originate in Asia, not in the AmericasSweet potatoes may originate in Asia, not in the Americas05-

y.▓Loca

23-2018 09:45 BJTNew research published in the Proceedings of the National Academies of Science on Mon

l media earlie

day suggests that sweet potatoes may have originated in Asia instead of the Americas, and much earlier than pr

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eviously known.Paleobotanists in

ra▓tor as s

Indiana University led by David D

aying the ma

ilche▓r identified 57-milion-year

intenance fe

-old leaf fossils▓ from eastern I

es should be

ndia as being from the morning gl?/p>

about half

坥ry family, which includes sweet

the ▓quoted price at 600 to

potatoes and m▓any other plants.The research suggest▓ed the family ori

ginated in the late Paleocene epoch in the East Gondwana land mass that became part of Asia."I think this will change people's ideas," Dilcher ▓said. "It will be a data point that is pi▓cked up and used in other work where researchers are tryi▓n

g to find the time of the evolution of major groups of flowering plants."Previou▓s

fossil evidence had suggested the morning glory family may have originated in North America about 35 million years ago, but molecular analyses supported th▓e idea that it originated earlier and in th

e Old World. The new research provides evi▓dence for that conclusion.The di

scovery also suggested the morning glory family and the ▓nightshade family - which includes potatoes and tomatoes - diverged earlier than

previously thought.Together with the recent, separate discovery of 52-million-y

ear-old nightshade fossils in Argentina, it revealed that morning glories developed in the East and nightshades in the West.The 17 fossils analyzed in the study are the earliest recorded fossils for both the morning glor

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y family, known as Convolvulaceae, and the order Solanales, which includes morning glories and nightshades.Morning glory fossils are rare because the plants' soft structure was not▓ easily preserved in rocks.Dilcher's collaborators, Gaurav Srivastava and Rakesh C. Mehrotra of India's B?/p>

坕rbal Sahni Institute of Palaeoscie

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