Mystery oil spills blot more than 130 Brazilian beaches

The source of large blots of oil staining more than 130 beaches in northeastern Brazil remained a mystery Tuesday despite President Jair Bolsonaro's assertions they came from outside the country and were possibly the work ...

Environmental defense fund develops methane-hunting satellite

Environmental Defense Fund (EDF), a U.S.-based nonprofit environmental advocacy group, intends to launch a new satellite designed to measure methane emissions worldwide. The spacecraft, named MethaneSAT, could offer a substantial ...

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Oil

An oil is a substance that is in a viscous liquid state ("oily") at ambient temperatures or slightly warmer, and is both hydrophobic (immiscible with water) and lipophilic (miscible with other oils, literally). This general definition includes compound classes with otherwise unrelated chemical structures, properties, and uses, including vegetable oils, petrochemical oils, and volatile essential oils. Oil is a nonpolar substance.

The term oil is often used colloquially to refer to petroleum.

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