ANKARA, Turkey (AP) — Nearly simultaneous explosions targeted a Turkish peace rally Saturday in Ankara, killing at least 86 people and wounding nearly 190 others in Turkey's deadliest attack in years — one that threatens to inflame the nation's ethnic tensions.
Urbanization — the expansion of cities — is on the rise. People across the globe are heading into urban areas looking for work, education and health care. Others arrive, fleeing wars and natural disasters. Without the proper planning, the rapid increase in urban areas, especially in developing countries where most growth is happening, can lead to some big problems.