The population of Egypt grew from nomads who settled along the fertile Nile banks and transformed Egypt into a sedentary, agricultural society by 4795 B.C. Farmers sowed and harvested crops during seasons around the flooding.

We translocated and monitored nuisance American beavers in desert river restoration sites on the Price and San Rafael Rivers, Utah, USA, and compared their space use to resident beavers after tracking both across 2 years. Resident adult (RA) beavers were detected at a mean maximum distance of 0.86 ± 0.21 river kilometers (km; ±1 SE), while resident subadult (RS) (11.00 ± 4.24 km), translocated adult (TA) (19.69 ± 3.76 km), and translocated subadult (TS) (21.09 ± 5.54 km) beavers were detected at substantially greater maximum distances. Based on coarse-scale movement models, translocated and RS beavers moved substantially farther from release sites and faster than RA beavers up to 6 months post-release.

Industrious, shy herbivores they may be, but the beavers of the Tierra del Fuego archipelago on the southern tip of South America are such a menace that scientists are planning the largest eradication project ever attempted.

A floodplain or flood plain or bottomlands[1] is an area of land adjacent to a river which stretches from the banks of its channel to the base of the enclosing valley walls, and which experiences flooding during periods of high discharge.[2] The soils usually consist of clays, silts, sands, and gravels deposited during floods.[3] Because the regular flooding of floodplains can deposit nutrients and water, floodplains frequently have high soil fertility; some important agricultural regions, such as the Mississippi river basin and the Nile rely heavily on the flood plains. Agricultural regions as well as urban areas have developed near or on flood plains, because the access to water and high quality soil. However, the risk of flooding has led to increasing attempts of flood control.

International aid could resolve many future problems and preserve this astonishing and beautiful place for humans, nonhuman animals and plants, but the lack of support from wealthy nations makes options like this difficult for residents of small island states to consider. Artificial islands have been created in Dubai – why not here? Many other hard engineering options exist, such as coastal fortification and land reclamation technologies.

Despite this, the demand for flexible packaging continues to rise. According to CEFLEX (Circular Economy for Flexible Packaging), 50% of food packaging is flexible. And Euromonitor International states that 75% of the total global flexible packaging, which represents 41% of all packaging, is flexible plastic. In Australia, according to APCO, flexible plastics make up 32.7% of all plastic packaging and have a disturbingly low recovery rate of 10.7%.

has specially built portals that allow sediment to be discharged downstream from the dam to prevent flooding and increase the capacity of the reservoir.

In the Netherlands engineers use something called a ‘sand machine’ — a massive manmade peninsula built of sand — that allows waves, wind and tides to more naturally build up beaches along the coast, in part to protect the sea from claiming wetlands. 

And since their removal, the Elwha has taken back the trapped sediment and distributed it downstream, causing the riverine ecosystem to be rebuilt and transformed. Massive quantities of silt, sand, and gravel have been carried to the coast, resurrecting a wetlands ecosystem long deprived of sediment.

In 2017, a surge in the lagoon’s water level was linked to the flood that ravaged parts of the states including Victoria Island, Lekki, Oniru, Ajah, and Epe. The high tide was said to have slowed down the flow of rainfall water from drainage channels.

The continuous sand filling of wetlands and conversion for housing units has impacted the ability of the natural systems to provide storage capacity and reduce the severity or frequency of flooding.

Dredging has significant environmental impacts: it can disturb marine sediments, leading to both short- and long-term water pollution, destroy important seabed ecosystems, and can release human-sourced toxins captured in the sediment.

When deposits of silt are compressed and the grains are pressed together, rocks such as siltstone form.

As a remedy these deposits are excavated and dumped in land fill sites. The river channel becomes deeper and wider and so is able to accommodate flood water. This is called de-silting. De- silting is executed only when river flow is obstructed. It is a flood control measure.

Over the years more and more eroded material / silt is deposited in the channel when the speed drops. These silt deposits obstruct the river flow. The river channel's water holding / carrying capacity goes down.

The results of the statistical analysis show that there is a significant relationship between residents’ flood awareness and having previous flood experience, but there is no significant association between their awareness of risk and the level of preparedness for flooding.

Each unit can be configured to produce between 1 and 20MW peak power, with output duration from 15 minutes to eight hours. For example a 10 MW, 25 MWh system could deliver full power (10MW) for 2.5hrs, or 5MW over five hours.

Gravitricity technology has a unique combination of characteristics: 50-year design life – with no cycle limit or degradationResponse time – zero to full power in less than one secondEfficiency – between 80 and 90 percentVersatile – can run slowly at low power or fast at high powerSimple – easy to construct near networksCost effective – levelised costs well below lithium batteries

The Gravitricity system uses weight configurations totalling up to 12,000 tonnes in a deep shaft, suspended by a number of cables, each of which is engaged with an electric winch capable of lifting its share of the weight. Electricity is stored in the form of potential energy by raising the weights. Power is then generated by lowering the weights to turn a generator. The technology has been proven to reach full power in less than one second and has a predicted full scale efficiency of between 80% and 90%.

Second, from a theoretical perspective, the best way to start growing more in any domain is to first lose less. We see this first principle everywhere: In a subscription business, you're better off reducing churn before increasing sign-ups. In personal finance, you're better off spending less before earning more. In investing, you're better off stopping losses before seeking gains.

The cost of excavating trash, sorting out valuable materials such as metals and then reburying the rest tends to exceed the revenues from selling recovered materials.

“I’m a big proponent of mining landfills,” says Mark Roberts, vice president of engineering consulting firm HDR and project manager for the landfill mining work at Perdido. “Garbage real estate is really valuable.”

Reading widely and applying knowledge to problems is what empowers us to take ownership of our lives. The world starts to look like a place of possibility when you can adopt new viewpoints and learn new skills.

The older we get the more we have to work to have new experiences. Growing up was a series of one new experience after another. Novelty was practically fed to us. As adults, novelty is no longer a given.

One way is to work in intense, focused bursts. When the ideas stop flowing and diminishing returns set in, do something which is conducive to mind-wandering. Exercise, walk, read, or listen to music.

When our minds are free to wander, we shift into a diffuse mode of thinking. This is sometimes referred to as our natural mode of thinking, or the daydream mode; it’s when we form connections and subconsciously mull over problems.

Often wars are caused by one country's wish to take control of another country's wealth. Whatever the other reasons for a war may be, there is almost always an economic motive underlying most conflicts, even if the stated aim of the war is presented to the public as something more noble.

Economic Gain Territorial Gain Religion Nationalism Revenge Civil War Revolutionary War Defensive War

Wars have been a part of human history for thousands of years, and have become increasingly destructive as industrialization and technology have advanced.

This could be why there is a growing resistance to the streaming culture, with vinyl sales experiencing colossal growth, overtaking CD sales for the first time since the 1980s.

Both Tunstall and Sanchez have created Patreon sites, where users pay a monthly fee to access exclusive music and an opportunity to communicate with the artists personally.