Eight national parks and 33 wildlife refuges along the Gulf of Mexico could be threatened by the oil spill, according to National Parks Director Jonathan Jarvis.

VOA: standard.2010.05.26

"And that role could be threatened by shortages in fuel or spiraling fuel costs."

VOA: standard.2010.08.11

Many wild animals can be dangerous if they feel threatened.

VOA: special.2009.04.15

Africa,with already severe weather conditions and a poor population largely dependent on subsistence farming, is considered to be the continent most threatened by climate change.

VOA: standard.2009.11.04

Witnesses say at one point early Friday morning, The chief mediator at the talks, former Mozambican President Joaquim Chissano ordered Mr.Rajoelina to sit down and be quiet when he threatened to walk out.

VOA: standard.2009.11.08

adaptations,coastal protections Among a host of necessary need to be built, crops threatened by drought need to be modified, health care needs to be stepped up, and new clean energy solutions need to put in place.

VOA: standard.2009.12.11