Scientists at Spain meeting sound alarm over ocean warming
Scientists at a United Nations conference in Spain called Friday for more research into the sharp rise in ocean temperatures which they warn could have devastating consequences.
Scientists at a United Nations conference in Spain called Friday for more research into the sharp rise in ocean temperatures which they warn could have devastating consequences.
Environment
Apr 12, 2024
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The idea that the universe is expanding dates from almost a century ago. It was first put forward by Belgian cosmologist Georges Lemaître (1894–1966) in 1927 and confirmed observationally by American astronomer Edwin Hubble ...
General Physics
Apr 15, 2024
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Surrounded by cocoa trees and intense heat, Christian Andre Yapi is forced to admit that the precious beans are no longer growing as they should, a major problem for the world's leading producer.
Environment
Apr 15, 2024
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Coastal communities need to prepare for simultaneous extreme weather events as heat waves increasingly overlap with surges in sea levels due to climate change, a study published on Thursday warned.
Environment
Apr 14, 2024
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Saturn's moon Mimas could have grown a huge underground ocean as its orbital eccentricity decreased to its present value and caused its icy shell to melt and thin.
Planetary Sciences
Apr 15, 2024
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78
By fueling the growth of plants that become kindling, carbon dioxide is driving an increase in the severity and frequency of wildfires, according to a UC Riverside study.
Earth Sciences
Apr 16, 2024
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Traditionally, estimates of how climate change will affect global economies have focused on the effects of annual temperature changes. However, the additional impacts of variability and extremes in rainfall and temperature ...
Environment
Apr 17, 2024
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The summers in Hampton Roads, Va., are hot, but for some residents, swelling temperatures and their impacts can be disproportionately worse.
Environment
Apr 15, 2024
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Globally, last year was the warmest for thousands of years, with a globally averaged temperature of at least 1.45°C greater than pre-industrial times. The year also saw an unprecedented string of extreme weather and climate ...
Earth Sciences
Apr 17, 2024
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26
The deadly heat wave that hit Africa's Sahel region in early April would not have occurred without human-induced climate change, according to a study by the World Weather Attribution (WWA) group published Thursday.
Earth Sciences
17 hours ago
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In physics and thermodynamics, heat is the process of energy transfer from one body or system to another due to a difference in temperature. In thermodynamics, the quantity TdS is used as a representative measure of the (inexact) heat differential δQ, which is the absolute temperature of an object multiplied by the differential quantity of a system's entropy measured at the boundary of the object.
A related term is thermal energy, loosely defined as the energy of a body that increases with its temperature. Heat is also loosely referred to as thermal energy, although many definitions require this thermal energy to actually be in the process of movement between one body and another to be technically called heat (otherwise, many sources prefer to continue to refer to the static quantity as "thermal energy"). Heat is also known as "Energy".
Energy transfer by heat can occur between objects by radiation, conduction and convection. Temperature is used as a measure of the internal energy or enthalpy, that is the level of elementary motion giving rise to heat transfer. Energy can only be transferred by heat between objects - or areas within an object - with different temperatures (as given by the zeroth law of thermodynamics). This transfer happens spontaneously only in the direction of the colder body (as per the second law of thermodynamics). The transfer of energy by heat from one object to another object with an equal or higher temperature can happen only with the aid of a heat pump, which does work.
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