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In the last 100 years, technological advancements allowed people to complete more tasks in less time and with less energy. It has changed completely our lives because of the amounts of new discoveries.

In the XX century, the technological advancements were insuperable, with a bigger development than ever before. The invention of the car, the radio, the television and the phone, revolutionize the lifestyle and jobs of millions of people making the life easier. Although we have to mention as well the aviation and thanks to that, is easier and faster go from one point of the world to another. Two areas with mayor advancements were the medical technology, that provide new ways of diagnose and fight a lot of mortal diseases. And the discovery of the space where we gain the most successful advance in our century: for the first time the man can leave and came back to the planet earth. The globalisation in the telecommunications and in the transport have made that any relevant issue can be known in few minutes all over the world. As a consequence, we gain the knowledge of different cultures around the world.

In the last decades, some experts have realized of some technological results that have also bad and destructive consequences. In the 70-80’s decade, the number of these bad results has augmented and their troubles have reached the public opinion. The experts highlighted, between other dangers, that the cars and machinery are contaminating the atmosphere, as well as the global resources has been used more than we should, that pesticides like DDT threaten the food chain and that the mineral remainders of a wide variety of mineral resources from the industries are contaminating the water reserves underneath the earth. It is said that in the last decades, the environments has been so harmed because of the technological advancements, that one of the challenges of the modern society is to seek places to keep the huge amount of wastes that we produce.

Scientists have found that the seas have already absorbed about half of all the carbon dioxide emitted by humanity since the start of the industrial revolution, a staggering 500 billion tons of it. This has so far helped slow global warming – which would have accelerated even faster if all this pollution had stayed in the atmosphere, already causing catastrophe – but at an increasingly severe cost.

The report published by the official Intergovernmental Panel on Climate Change (IPCC), where top scientists and their governments from all over the world, agreed and predicts that ‘nearly a third of the world's species could be driven to extinction as the world warms up, and that harvests will be cut dramatically across the world’. It concludes that emissions of carbon dioxide – the main cause of global warming – have already increased the acidity of ocean surface water by 30 per cent, and threaten to treble it by the end of the century.

In fact, technology has been a very useful tool for the human race developing. It has been a progress sign and backward movement because it has helped the human race to develop itself but as well it is destroying it in somehow. As an example, we can see the health advancements that help to save lives and the advancements in the military sector that helps to kill.