WikiNow lets you discover the news you care about, follow the topics that matter to you and share your favourite stories with your friends.

© WikiNow

Ocean Conservation, Dark Matter Hunt. June 8, 2018, Part 1 - WBEZ

Planets, stars, and physical “stuff” make up a tiny fraction of the universe. Most of the universe's mass is instead invisible dark matter, which makes itself known not by luminance, but by its gravitational influence on the cosmos. The motions of ...

Biodiversity: What is it and Why Does it Matter? - Island Conservation News

Indeed, islands are home to 41% of the Earth's highly threatened animals, and preventing extinctions of their native species is possible. Conservation interventions on islands to remove the threat of invasive species have proven successful hundreds of ...

Does Size Matter? Debating the Role of Marine Protected Areas - News Deeply

And some scientists argue that the protections these designations provide are simply misplaced, because, they say, while remote, deep-ocean MPAs help countries meet conservation targets, they may not do enough to protect vulnerable biodiversity.

Why the Conservation of Orchids Is No Simple Matter - Smithsonian

That's why the North American Orchid Conservation Center (NAOCC) is building a national network of repositories to bank orchid seeds and the fungi found in their roots. Their goal is to store the genetic material needed to conserve all of the more than ...

For tropical forest birds, old neighborhoods matter - Phys.Org

Old, complex tropical forests support a wider diversity of birds than second-growth forests and have irreplaceable value for conservation, according to an Oregon State University-led exhaustive analysis of bird diversity in the mountains of southern ...

Wetlands matter is sustainable urban future - Chronicle

Ramsar Convention aims to promote the conservation and wise use of all wetlands through local, regional and national actions and international cooperation, as a contribution towards achieving sustainable development throughout the world. Zimbabwe ...

Hunting should never occur in conservation areas - durhamregion.com

No matter what the season, no matter what the weather Durham Region's conservation areas are filled with people enjoying the great outdoors. When you think about it what can't you do in these areas? Wintertime provides any number of outdoor ...

Plight of Rhinos a reminder that conservation is a serious matter - CosmicNovo.com (Science and Technology)

There are currently five remaining species of rhino (White, Black, Greater, Sumatran & Javan), three are critically endangered (Black, Javan & Sumatran), one is vulnerable (Greater), one is near threatened (White). Three are located in Asia (Greater ...

Soil conservation becomes heart of the matter in land of sand - gulfnews.com

Dubai: Kids visiting Dubai's Kite Beach this weekend can turn soil scientists for a day and learn about soil conservation in a fun and engaging way. For the very fact that there is hardly any soil in the land of sand, the World Soil Day has become an ...

Harrison Ford: 'We've got people in charge of important sh*t who don't believe in science' - Mashable

Such was the case on Thursday night when Ford received an award from the environmental non-profit group, Conservation International. The actor used ... If we end the ability of a healthy natural world to sustain humanity nothing else will matter ...

'Soil your undies' to test the quality of your soil - CBC.ca

They found that by burying undyed 100 per cent cotton underwear for two months, farmers and gardeners will get a good indication of how much organic matter exists in their soil. ... "That's the ultimate goal, is to bring awareness to soil conservation ...

A UI To Make You Fall In Love With Conserving Water - Co.Design (blog)

That's what the water conservation smart sensor Well is meant to do. Designed and engineered by the firms Matter and Mindtribe, Well is a prototype system of sensors that you hook up to some or all of your water lines, depending on how precisely you ...

Primates matter, and this is why! - The Earth Times

The need for conservation extends of course to all the smaller (and larger) species in the same habitat, some of which are even better known than the monkeys and apes involved. Palm oil plantations are always at the front of the problem, but Chinese ...

Why birds matter - EurekAlert (press release)

University of Utah ornithologist and biology department professor Cagan Sekercioglu presents a new book, "Why Birds Matter," this week at the IUCN World Conservation Congress in Honolulu. Held every four years, this is the world's largest conservation ...

'White Lives Matter' marlin conservation shirts fishing for trouble, some say - WTSP.com

In recent months, the phrases "Black Lives Matter" and "Blue Lives Matter" have become increasingly prevalent as rallying cries in response to police-involved shootings of African-Americans and shootings of police officers, respectively. While the ...

'White Lives Matter' slammed by 'Whitey' shirt creator - Delmarva Daily Times

The "White Lives Matter" shirts were intended to promote white marlin conservation. But people like Dan Hassan, of Pakistani lineage, felt the term, based on the Black Lives Matter movement that sprouted in the wake of police shootings, crossed a line.

MD Marina's 'White Lives Matter' T-Shirt Draws Criticism From NAACP - Fox News Insider

A Maryland marina's cheeky campaign to spread awareness about the conservation of white and blue marlins has provoked the ire of a local NAACP chapter. White Marlin Marina in Ocean City has been selling t-shirts with the phrases "White Lives Matter" ...

Marina's 'White (Marlin) Lives Matter' shirts upset NAACP - WLS-TV

An Ocean City marina is selling T-shirts featuring the phrases "White Lives Matter" and "Blue Lives Matter" to spread awareness - about the conservation of white and blue marlins. The NAACP is not pleased about this. White Marlin Marina worker George ...

Marina owner explains why he's selling 'White Lives Matter' shirts to benefit marlins - Fox Baltimore

Russell Baiocco, owner of the White Marlin Marina, had the idea to collaborate with an employee, George Lamplugh, to sell shirts at his marina with a portion of the funds going towards the conservation of marlins. He says 11 years ago the fish species ...

Ocean City marina sells 'White Lives Matter' shirts for marlin conservation - Baltimore Sun

OCEAN CITY, Md. (AP) — An Ocean City marina is selling T-shirts featuring the phrases “White Lives Matter” and “Blue Lives Matter” to spread awareness about the conservation of marlins. The White Marlin Marina is selling two types of the shirts — one ...

The law of conservation of mass or principle of mass conservation states that for any system closed to all transfers of matter and energy, the mass of the system must remain constant over time, as system mass cannot change quantity if it is not added or removed. Hence, the quantity of mass is "conserved" over time. The law implies that mass can neither be created nor destroyed, although it may be rearranged in space, or the entities associated with it may be changed in form, as for example when light or physical work is transformed into particles that contribute the same mass to the system as the light or work had contributed. Thus, during any chemical reaction, nuclear reaction, or radioactive decay in an isolated system, the total mass of the reactants or starting materials must be equal to the mass of the products.

Russian scientist Mikhail Lomonosov discovered the law of mass conservation in 1756 by experiments, and came to the conclusion that phlogiston theory is incorrect.
Antoine Lavoisier's discovery of the Law of Conservation of Mass led to many new findings in the 19th century. Joseph Proust's law of definite proportions and John Dalton's atomic theory branched from the discoveries of Antoine Lavoisier. Lavoisier's quantitative experiments revealed that combustion involved oxygen rather than what was previously thought to be phlogiston.

The law of conservation of mass or principle of mass conservation states that for any system closed to all transfers of matter and energy, the mass of the system must remain constant over time, as system mass cannot change quantity if it is not added or removed. Hence, the quantity of mass is "conserved" over time. The law implies that mass can neither be created nor destroyed, although it may be rearranged in space, or the entities associated with it may be changed in form, as for example when light or physical work is transformed into particles that contribute the same mass to the system as the light or work had contributed. Thus, during any chemical reaction, nuclear reaction, or radioactive decay in an isolated system, the total mass of the reactants or starting materials must be equal to the mass of the products.

The concept of mass conservation is widely used in many fields such as chemistry, mechanics, and fluid dynamics. Historically, mass conservation was discovered in chemical reactions by Antoine Lavoisier in the late 18th century, and was of crucial importance in the progress from alchemy to the modern natural science of chemistry.

The closely related concept of matter conservation was found to hold good in chemistry to such high approximation that it failed only for the high energies treated by the later refinements of relativity theory, but otherwise remains useful and sufficiently accurate for most chemical calculations, even in modern practice.

In special relativity, needed for accuracy when large energy transfers between systems is involved, the difference between thermodynamically closed and isolated systems becomes important, since conservation of mass is strictly and perfectly upheld only for so-called isolated systems, i.e. those completely isolated from all exchanges with the environment. In this circumstance, the mass–energy equivalence theorem states that mass conservation is equivalent to total energy conservation, which is the first law of thermodynamics. By contrast, for a thermodynamically closed system (i.e., one which is closed to exchanges of matter, but open to exchanges of non-material energy, such as heat and work, with the surroundings) mass is (usually) only approximately conserved. The input or output of non-material energy must change the mass of the system in relativity theory, although the change is usually small, since relatively large amounts of such energy (by comparison with ordinary experience) carry only a small amount of mass (again by ordinary standards of measurement).

In special relativity, mass is not converted to energy, since mass and energy cannot be destroyed, and energy in all of its forms always retains its equivalent amount of mass throughout any transformation to a different type of energy within a system (or translocation into or out of a system). Certain types of matter (a different concept) may be created or destroyed, but in all of these processes, the energy and mass associated with such matter remains unchanged in quantity (although type of energy associated with the matter may change form).

In general relativity, mass (and energy) conservation in expanding volumes of space is a complex concept, subject to different definitions, and neither mass nor energy is as strictly and simply conserved as is the case in special relativity and in Minkowski space. For a discussion, see mass in general relativity.