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Deterring signals: Tobacco plants advertise their defensive readiness to attacking leafhoppers

Following herbivory, plants produce jasmonic acid, a hormone which activates several plant defense reactions. Scientists found that leafhoppers can evaluate whether tobacco plants are ready for defense when attacked. If jasmonate-signaling ...

Biology / Biotechnology

created May 23, 2012 | popularity 5 / 5 (1) | comments 0

Zooming in on bacterial weapons in 3-D

The plague, bacterial dysentery, and cholera have one thing in common: These dangerous diseases are caused by bacteria which infect their host using a sophisticated injection apparatus. Through needle-like ...

Biology / Cell & Microbiology

created May 21, 2012 | popularity 3 / 5 (1) | comments 0 | with audio podcast

Hitting snooze on the molecular clock: Rabies evolves slower in hibernating bats

The rate at which the rabies virus evolves in bats may depend heavily upon the ecological traits of its hosts, according to researchers at the University of Georgia, the U.S. Centers for Disease Control and Prevention and ...

Biology / Plants & Animals

created May 18, 2012 | popularity not rated yet | comments 0 | with audio podcast

A new optical microscopy approach opens the door to better observations in molecular biology

Researchers from the Institut Pasteur and CNRS have set up a new optical microscopy approach that combines two recent imaging techniques in order to visualize molecular assemblies without affecting their biological ...

Biology / Cell & Microbiology

created May 17, 2012 | popularity not rated yet | comments 0

Hitch-hiking with birds for life

Although chewing lice spend their entire lives as parasites on birds, it is difficult to predict patterns of lice distribution, new research from the University of Gothenburg, Sweden, reveals.

Biology / Plants & Animals

created May 14, 2012 | popularity not rated yet | comments 0

Researchers reveal unseen planet by its gravity

More than a 150 years ago, before Neptune was ever sighted in the night sky, French mathematician Urbain Le Verrier predicted the planet's existence based on small deviations in the motion of Uranus. In a ...

Space & Earth / Astronomy

created May 10, 2012 | popularity 4.9 / 5 (14) | comments 0 | with audio podcast

Ultra-cool companion helps reveal giant planets

(Phys.org) -- An international team of astronomers led by David Pinfield of the University of Hertfordshire has found a brown dwarf that is more than 99% hydrogen and helium. Described as ultra-cool, it has ...

Space & Earth / Astronomy

created May 10, 2012 | popularity 4.8 / 5 (6) | comments 0 | with audio podcast

Massive black holes halt star birth in distant galaxies

Astronomers, using the European Space Agency's (ESA) Herschel Space Observatory, have shown that the number of stars that form during the early lives of galaxies may be influenced by the massive black holes ...

Space & Earth / Astronomy

created May 09, 2012 | popularity 4.6 / 5 (7) | comments 34 | with audio podcast

Bark beetle management and ecology in southern pine forests

Periodic outbreaks of bark beetles can cause annual losses of millions of dollars and pose serious challenges for forest managers, and the suppression of outbreaks is particularly difficult and expensive.

Biology / Ecology

created Apr 23, 2012 | popularity not rated yet | comments 0

Direct transfer of plant genes from chloroplasts into the cell nucleus

Chloroplasts, the plant cell's green solar power generators, were once living beings in their own right. This changed about one billion years ago, when they were swallowed up but not digested by larger cells. ...

Biology / Cell & Microbiology

created Apr 13, 2012 | popularity 5 / 5 (5) | comments 0 | with audio podcast

When stellar metallicity sparks planet formation

New research predicts the criteria needed for Earth-like planets to form around a star that have one-tenth the metallicity of our Sun. If researchers find small, rocky planets orbiting stars with lower metallicity, ...

Space & Earth / Astronomy

created Apr 10, 2012 | popularity 5 / 5 (1) | comments 9 | with audio podcast

Head and body lice appear to be the same species, genetic study finds

A new study offers compelling genetic evidence that head and body lice are the same species. The finding is of special interest because body lice can transmit deadly bacterial diseases, while head lice do ...

Biology / Plants & Animals

created Apr 09, 2012 | popularity not rated yet | comments 2 | with audio podcast

To drive infections, a hijacking virus mimics a cell's signaling system

New biological research reveals how an invading virus hijacks a cell's workings by imitating a signaling marker to defeat the body's defenses. By manipulating cell signals, the virus destroys a defensive protein designed ...

Biology / Cell & Microbiology

created Mar 26, 2012 | popularity not rated yet | comments 0 | with audio podcast

Using viruses to beat superbugs

Viruses that can target and destroy bacteria have the potential to be an effective strategy for tackling hard-to-treat bacterial infections. The development of such novel therapies is being accelerated in response to growing ...

Biology / Cell & Microbiology

created Mar 26, 2012 | popularity 4 / 5 (2) | comments 1

Subtle differences can lead to major changes in parasites

Researchers have found the subtle genetic differences that make one parasite far more virulent than its close relative.

Biology / Cell & Microbiology

created Mar 22, 2012 | popularity 5 / 5 (1) | comments 0 | with audio podcast

Hostel

Hostels provide budget oriented, sociable accommodation where guests can rent a bed, usually a bunk bed, in a dormitory and share a bathroom, lounge and sometimes a kitchen. Rooms can be mixed or single-sex, although private rooms may also be available. Hostels are generally cheaper for both the operator and the occupants; many hostels have long-term residents whom they employ as desk clerks or housekeeping staff in exchange for free accommodation.

In a few countries, such as the UK, Ireland, the Netherlands, India, and Australia, the word hostel sometimes also refers to establishments providing longer-term accommodation (often to specific classes of clientele such as nurses, students, drug addicts, or court defendants on bail) where the hostels are sometimes run by Housing Associations and charities. In the rest of the world, the word hostel refers only to properties offering shared accommodation to travellers or backpackers.

Within the 'traveller' category, another distinction can be drawn between hostels which are members of Hostelling International (HI), a UK-based, non-profit organization encouraging outdoor activities and cultural exchange for the young (formerly the IYHA), and independently operated hostels. Hostels for travellers are sometimes called backpackers' hostels, particularly in Australia and New Zealand (often abbreviated to just "backpackers").

For more information about Hostel, read the full article at Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.