Endangered whales – these fascinating huge mammals were hunted so heavily that the populations were severely reduced. During the 19th century, whales were hunted primarily for oil and baleen. Before the advent of electricity, many American homes were lighted with whale oil. As recently as twenty years ago, products from whales were used for everything from machine oil to women’s cosmetics. Because of the passage of the Marine Mammal Protection Act in 1972, it became illegal to import products containing materials from whales.
Global warming – is the rise in the average temperature of Earth’s atmosphere and oceans since the late 19th century and its projected continuation. Main reasons are of greenhouse gases produced by human activities such as the burning of fosil fuels and deforestation. Since the early 20th century, Earth’s mean surface temperature has increased by about 0.8 °C. The greenhouse effect is the process by which absorption and emission of infrared radiation by gases in the atmosphere warm a planet’s lower atmosphere and surface.
Deforestation – Amazon rainforest is called “lung of the world”. Brazil once had the highest deforestation rate in the world and as of 2005 still has the largest area of forest removed annually.Since 1970, over 600,000 square kilometers of Amazon rainforest have been destroyed. In 2001, the Amazon was approximately 5.4 million square kilometres, which is only 87% of the Amazon’s original state. Deforestation is also ruining the life of natives and Indian population life. Damage to forests, believe it or not, affects every citizen’s standard of living.
Pesticides – the most common use of pesticides is as plant and crops protection products. Target pests can include insects, plant pathogens, weeds, molluscs, birds, mammals, fish, nematodes (roundworms), and microbes that destroy property, cause nuisance, spread disease or are vectors for disease. Pesticides may cause acute and delayed health effects. The American Medical Association recommends limiting exposure to pesticides and using safer alternatives. Evaluates pesticides and other chemicals to safeguard people, threatened species and ecosystems from environmental harm
Great Pacific Ocean Garbage Patch – is a swirling sea of plastic bags, bottles and other debris is growing in the North Pacific, and now another one has been found in the Atlantic. Not all garbage ends up at the dump. A river, sewer or beach can’t catch everything the rain washes away, either. The patch extends over an indeterminate area, with estimates ranging very widely depending on the degree of plastic concentration used to define the affected area. 80% of the garbage comes from land-based sources and 20% from ships. Rivers are great source of ocean pollution.
Traffic pollution – form of air pollution coming from vehicles, though it sometimes can also refer to noise pollution coming from cars and other vehicles. Researches have demonstrated increased risk of developing asthma and COPD from increased exposure to traffic-related air pollution. Traffic pollution still continues to grow, even despite the cleaner vehicle engines. Babies who are exposed to ambient air traffic pollution are likely to have poorer lung function up to the age of eight. Pollution in big cities is responsible for dark starless sky at night.
Oil catastrophes – million gallons of oil are leaking to the sea. Huge area of ocean is contamined. Oil is killing fishs and animals, ruining life of human fishermen. Some incidents are part of war – the Gulf War Oil Spill where hundreds of millions of barrels of crude oil poured in the Persian Gulf during the Kuwait War. Some of it occured by accident. Largest oil spills (diseasters) was at tanker ship in Alaska, Gulf of the Mexico, Galapagos Islands, France, Fergana Valley in Uzbekistan and a lot of more. The oil companies need to go more deeper and deeper for oil every year.
Drinking water – Water scarcity involves water stress, water deficits, water shortage and water crisis. The concept of water stress is relatively new. Water stress is the difficulty of obtaining sources of fresh water for use, because of depleting resources. A water crisis is a situation where the available potable, unpolluted water within a region is less than that region’s demand. The biggest water crisis is in Sudan where about 12.3 million of people have no access to the potable water.