ScienceIQ.com

What is Geodesy?

Geodesy is the science of measuring and monitoring the size and shape of the Earth. Geodesists basically assign addresses to points all over the Earth. If you were to stick pins in a model of the Earth and then give each of those pins an address, then you would be doing what a geodesist does. By looking at the height, angles, and distances between ...

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WhatisGeodesy
Chemistry

Oil Viscosity

Everybody recognizes 'oil' as a word for liquid materials that do not behave like water. They have a 'thickness' and self-cohesive character (autocohesion) that enables them to form a film on a ... Continue reading

OilViscosity
Astronomy

Mission: Gather Comet Dust; Return To Earth

One of the most imaginative NASA missions of recent years is the Stardust mission. Its main purpose: to gather dust and particles from comet P/Wild 2 and return them to Earth for study. Think about ... Continue reading

CometDust
Geology

What Causes Ice Ages....Or Global Warming?

We know from the rock record and cores taken from polar ice caps that periods of global cooling (ice ages, or periods of glaciation) have alternated with warmer, more temperate periods having climates ... Continue reading

IceAgesGlobalWarming
Astronomy

Amazing GRACE

Gravity has an effect on everyone and everything on Earth. Although we can't see it, smell it, taste it or touch it, we know it's there. Although scientists already know quite a bit about this ... Continue reading

AmazingGRACE

Lionfish Invasion

LionfishInvasionLionfish (Pterois volitans/miles complex) are beautiful, yet venomous, coral reef fish from Indian and western Pacific oceans that have invaded East Coast waters. Ironically, this species of lionfish is popular in large saltwater aquariums because of its brilliant maroon and white stripes and fan-like fins. However, beneath the fin's delicate exterior are venomous spines that are probably used for protection against predators.

Along the southeast United States, adult lionfish have been found at depths of 85 to 300 feet from Florida to North Carolina. Juvenile lionfish have also been observed in North Carolina, Bermuda and as far north as New York. NOAA scientists conclude that the large number of adults observed and the occurrence of juveniles indicates that lionfish are established and reproducing in coastal waters along the southeast United States. Furthermore, there is evidence that lionfish numbers are increasing.

Lionfish were likely first introduced off the Florida coast in the early to mid-1990s by intentional or unintentional release from the aquarium trade, including amateur home aquariums. There is no evidence suggesting that these lionfish derived from other common invasive species sources, such as ballast water dumping from the shipping industry, live-bait use by anglers or fouling on recreational boat hulls or semi-submersible oil platforms. Although it's still too early to predict the impact lionfish will have on the Atlantic coast, the damaging impacts of other invasive species have already left their mark on too many of the nation's valuable coastal ecosystems.