The USA will become a modest free-market economy supporting a socialist state. Its living standard will fall below the current norm for most Central American countries. Its agricultural output will be halved due to exhaustion of irrigation aquifers and the displacement of crops due to changes in temperature and weather patterns. Unemployment and under-employment will be the norm. A number of states will suffer bankruptcies. The national highway network will begin to disintegrate. Social unrest and crime will be high. Feeding urban populations will be a serious concern. The USA's diplomatic relations with Canada and the UK will be tense.
Central America and northern South America will deal with fallout from the collapse of Venezuela for nearly 50 years. The market for high-sulfur crude will flatten. Living standards will fall and this will spread into neighboring countries. The coca-leaf trade will resurge and criminal gangs will become more widespread and powerful, causing further trouble with weakened governments.
Europe will be split between police states and impoverished liberal democracies. Agricultural displacement will present a serious complication for international relations. The E.U. may cease to function. There will be a resurgence of interest in nuclear power in Europe, to stave off vulnerability to Russia.
Large scale multi-national science projects such as CERN and the follow-on to the International Space Station will begin to come unraveled. National expenditures on pure research will drop to almost nothing. Applied research in military and specific commercial applications will continue in many countries at a reduced level.
Governments around the globe will routinely use futuristic surveillance and monitoring of communications and other activities in order to "model" (that is, to control) their citizens and residents. The appearance of greater ease of travel and access to information or goods will actually be the result of improved government and commercial information-gathering efforts.
The continent of Africa will begin to export goods on a large scale to the rest of the world, largely with the assistance of China. Many additional African countries will become exporters of oil, natural gas, and uranium. Standard of living will rise, generally, across the continent, but human rights, education, and public health will continue to lag. Most national governments will continue to deal with poor administration. Some countries will begin to face a gang problem serious enough to challenge the legitimacy of the national government.
There will be a period of open hostilities between India and Pakistan, which might include a nuclear exchange. The entire sub-Himalayan region of Asia will be battered by ever-more-extreme monsoon and typhoon events, resulting in economic stagnation.
China will continue to move toward becoming the world's largest economy - with increasing help from its clients in Africa - and making the Yuan a reserve currency, although it will not do so smoothly. Living standards there will increase slowly but steadily. It will undertake a major expansion of its navy. The government will use the highest tech to monitor the population and protect its ability to control them.
Still no flying cars.