GLEN CANYON, ARIZONA - Mu gihe Leta Zunze Ubumwe za Amerika z'Uburengerazuba zihanganye n'ikibazo cy'amapfa akomeye, buri gitonyanga cy'amazi ni ingenzi cyane. Mu ntambwe ikomeye yo gucunga neza amazi, Ikigo gishinzwe ubushakashatsi ku birebana n'ubutaka muri Amerika (USGS), ku bufatanye n'inzego zishinzwe amazi muri leta, cyatangaje ko ikoreshwa ryacyo ryagenze neza...
Agace k'inyuma ka Pine Lake, gaherereye mu majyaruguru ya Michigan, muri Amerika, ni agace gasanzwe ko ku nkengero z'ikiyaga. Nubwo gafite ubwiza butangaje, gahura n'ibihe by'itumba birebire, aho urubura rugwa buri mwaka rurenza cm 250. Agace kandi gafite ahantu hanini h'icyatsi kibisi, pariki, n'ikibuga cya golf, bigatuma ubusitani bw'impeshyi bubungabungwa...