Science Daily is an American website that aggregates press releases and publishes lightly edited press releases (a practice called churnalism) about science, similar to and EurekAlert!.[1][2][3]

The site was founded by married couple Dan and Michele Hogan in 1995; Dan Hogan formerly worked in the public affairs department of Jackson Laboratory writing press releases.[4] The site makes money from selling advertisements.[4] As of 2010, the site said that it had grown "from a two-person operation to a full-fledged news business with worldwide contributors" but at the time, it was run out of the Hogans' home, had no reporters, and only reprinted press releases.[4] In 2012, Quantcast ranked it at 614 with 2.6 million U.S. visitors.[5]

Science Daily
Type of site
Press release distribution
Available inEnglish
OwnerScienceDaily, LLC


  1. ^ Timmer, John (23 September 2009). "PR or science journalism? It's getting harder to tell". Ars Technica.
  2. ^ Yong, Ed (11 January 2010). "Adapting to the new ecosystem of science journalism". National Geographic Phenomena. Meanwhile, sites like ScienceDaily, Eurekalert and PhysOrg provide the pretence of journalism while actually acting as staging grounds for PR.
  3. ^ Choi, Charles Q. (January 24, 2012). "From the Writer s Desk: The Dangers of Press Releases". Scientific American Blog Network. In cases where the scientists are not contacted about their research, we have "churnalism" — news released based largely if not totally on press release alone. We also have pres-release farms such as PhysOrg and ScienceDaily that seem to me to do little else but repackage press releases one can find on science press releases sites such as EurekAlert.
  4. ^ a b c Stern, Gary M. (15 April 2010). "Site Provides Latest Scientific Research for Free". Information Today. Archived from the original on 25 September 2015.
  5. ^ "Quantcast review of ScienceDaily website". Quantcast. Archived from the original on 28 October 2012.

External links

Asimov (crater)

Asimov Crater is an impact crater in the Noachis quadrangle of Mars, located at 47.0° S and 355.05° W. It is 84.0 km in diameter and was named after Isaac Asimov (1920–1992), an American biochemist and writer. The name was officially adopted on May 4, 2009.


Bifocals are eyeglasses with two distinct optical powers. Bifocals are commonly prescribed to people with presbyopia who also require a correction for myopia, hyperopia, and/or astigmatism.

Cannabis consumption

Cannabis consumption refers to the variety of ways cannabis is consumed, among which inhalation (smoking and vaporizing) and ingestion are most common. Salves and absorption through the skin (transdermal) are increasingly common in medical uses, both of CBD, THC, and other cannabinoids. Each method leads to subtly different psychoactive effects due to the THC and other chemicals being activated, and then consumed through different administration routes. It is generally considered that smoking, which includes combustion toxins, comes on quickly but lasts for a short period of time, while eating delays the onset of effect but the duration of effect is typically longer. In a 2007 ScienceDaily report of research conducted at the University of California–San Francisco, researchers reported that vaporizer users experience the same biological effect, but without the toxins associated with smoking.


Catacombs are human-made subterranean passageways for religious practice. Any chamber used as a burial place is a catacomb, although the word is most commonly associated with the Roman Empire.

Copernicus (Martian crater)

Copernicus is a large crater on Mars, with a diameter close to 300 km. It is located south of the planet's equator in the heavily cratered highlands of Terra Sirenum in the Phaethontis quadrangle at 48.8°S and 191.2°E. Its name was approved in 1973, and it was named after Nicolaus Copernicus.

Human outpost

Human outposts are artificially-created, controlled human habitats located in environments inhospitable for humans, such as on the ocean floor, in space or on another planet.

The logistics and difficulties inherent in such ventures have been heavily explored in science fiction.

Jahai language

Jahai (Jehai) is an aboriginal Mon–Khmer language spoken by the Jahai people living in Taman Negeri Diraja Belum of Perak, Malaysia. The small number of speakers is increasing.

Jahai vocabulary includes a series of words for describing odors.


M60-UCD1 is an ultracompact dwarf galaxy. It is 54 million light years from Earth, close to Messier 60 (M60, NGC 4649) in the Virgo Cluster. Half of its stellar mass is in the central sphere 160 light years in diameter.


Micropower describes the use of very small electric generators and prime movers or devices to convert heat or motion to electricity, for use close to the generator. The generator is typically integrated with microelectronic devices and produces "several watts of power or less." These devices offer the promise of a power source for portable electronic devices which is lighter weight and has a longer operating time than batteries.

Newton (Martian crater)

Newton is a large crater on Mars, with a diameter close to 300 km. It is located south of the planet's equator in the heavily cratered highlands of Terra Sirenum in the Phaethontis quadrangle. The crater was named in 1973 by the International Astronomical Union (IAU) Working Group for Planetary System Nomenclature (WGPSN) in honor of British physicist Sir Isaac Newton.

Niger Vallis

Niger Vallis is a valley on Mars that appears to have been carved by water. It has been identified as an outflow channel. It merges with Dao Vallis which runs southwestward into Hellas Planitia from the volcanic Hadriacus Mons. Like Dao, it was formed around the Late Noachian and Early Hesperian Epochs. It is named after the Niger River in Africa.

Penticton (crater)

Penticton is an impact crater in the Hellas quadrangle of Mars, located at 38.35° south latitude and 263.35° west longitude. Penticton is on the eastern rim of the Hellas impact crater. It is 8 kilometers in diameter and was named after Penticton, a Town in British Columbia, Canada, nearby the little town of Okanagan Falls where is located the Dominion Radio Astrophysical Observatory. Images with HiRISE show gullies which were once thought to be caused by flowing water.

Pesticides in the United States

Pesticides in the United States are used predominantly by the agricultural sector, but approximately a quarter of them are used in houses, yards, parks, golf courses, and swimming pools.

Ptolemaeus (Martian crater)

Ptolemaeus is a crater on Mars, found in the Phaethontis quadrangle at 46.21° south latitude and 157.6° west longitude. It measures approximately 165 kilometers in diameter and was named after Claudius Ptolemaeus (Ptolemy), the Greco-Egyptian astronomer (c. AD 90-160). Mantle material that is believed to have fallen from the sky is visible in the crater.

The Soviet probe Mars 3 is thought to have successfully landed in Ptolemaeus Crater in 2 December 1971, but contact was lost seconds after landing due do a dust storm occurring at the time. On 11 April 2013, NASA announced that the Mars Reconnaissance Orbiter (MRO) may have imaged the Mars 3 lander hardware on the surface of Mars. The HiRISE camera on the MRO took images of what may be the parachute, retrorockets, heat shield and lander.

Slipher (Martian crater)

Slipher is an impact crater in the Thaumasia quadrangle of Mars, located at 47.3°S latitude and 84.6°W longitude. It measures 127 kilometers in diameter and was named after American astronomers Vesto and Earl Slipher. The naming was approved by IAU's Working Group for Planetary System Nomenclature in 1973.

Tader Valles

Tader Valles is a set of small channels in the Phaethontis quadrangle found at

49.1° south latitude and 152.5° west longitude. it is named after the ancient name for present Segura River, Spain.


Terrain or relief (also topographical relief) involves the vertical and horizontal dimensions of land surface. The term bathymetry is used to describe underwater relief, while hypsometry studies terrain relative to sea level. The Latin word terra (the root of terrain) means "earth."

In physical geography, terrain is the lay of the land. This is usually expressed in terms of the elevation, slope, and orientation of terrain features. Terrain affects surface water flow and distribution. Over a large area, it can affect weather and climate patterns.

Toba catastrophe theory

The Toba supereruption was a supervolcanic eruption that occurred about 75,000 years ago at the site of present-day Lake Toba in Sumatra, Indonesia. It is one of the Earth's largest known eruptions. The Toba catastrophe theory holds that this event caused a global volcanic winter of six to ten years and possibly a 1,000-year-long cooling episode.

In 1993, science journalist Ann Gibbons posited that a population bottleneck occurred in human evolution about 70,000 years ago, and she suggested that this was caused by the eruption. Geologist Michael R. Rampino of New York University and volcanologist Stephen Self of the University of Hawaii at Manoa support her suggestion. In 1998, the bottleneck theory was further developed by anthropologist Stanley H. Ambrose of the University of Illinois at Urbana–Champaign. Both the link and global winter theories are highly controversial.

The Toba event is the most closely studied supereruption.

Very (Martian crater)

Very is a crater on Mars, located south of the planet's equator in the heavily cratered highlands of Terra Sirenum in the Phaethontis quadrangle at 49.2°S and 177.1°W. It measures approximately 115 kilometers in diameter. The crater was named after American astronomer Frank Washington Very.


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