13th century

(12th century - 13th century - 14th century - other centuries)


Events Significant people Inventions, Discoveries, Introductions
Decades and Years

1190s 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199
1200s 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209
1210s 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219
1220s 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229
1230s 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239
1240s 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249
1250s 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259
1260s 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269
1270s 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279
1280s 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289
1290s 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299
1300s 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309
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In the News

Comfort Food: Chocolate, Water Reduce Pain Response To Heat
People often eat food to feel better, but researchers have found that eating chocolate or drinking water can blunt pain, reducing a rat's response to a hot stimulus. This natural form of pain relief may help animals in the wild avoid distraction while eating scarce food, but in modern humans with readily available food, the effect may contribute to overeating and obesity.

Nuclear-powered Mission To Neptune Could Answer Questions About Planet
In 30 years, a nuclear-powered space exploration mission to Neptune and its moons may begin to reveal some of our solar system's most elusive secrets about the formation of its planets -- and recently discovered ones that developed around other stars. This vision of the future is the focus of a 12-month planning study conducted by a diverse team of experts led by Boeing Satellite Systems and funded by NASA.

Genes May Tell A Lot About The Secret Lives Of Bees
Despite the fact that bees are one of the most beneficial insects in the world, much of their behavior remains a mystery -- even to the apiculturists who tend them. To better understand such fundamental processes as reproduction, and cope with problems such as bee mites and diseases, scientists are at work on a state-of-the-art genomics resource.

Study: 'Homemade' Gene Expression Technology Unreliable
Technology for analyzing gene expression must be standardized among laboratories and across platforms around the world to support this age of human genome exploration, an Oregon Health &Science University researcher says. Otherwise, scientists using DNA microarrays, also known as gene chips, risk having their research results called into question, said Peter Spencer, Ph.D. He co-authored a study showing that labs using commercial rather than homemade microarray platforms and common procedures can generate comparable data.

Sequencing Method Yields Fuller Picture
Sequence data for both chromosomes, can be inferred under the right circumstances through a new statistical method developed by USC biologists.

National Snow and Ice Data Center (NSIDC)
Website for this center that "supports research into our world's frozen realms: the snow, ice, glaciers, frozen ground, and climate interactions that make up Earth's cryosphere."Search or browse data collections, read publications and news, and view images of glaciers and icebergs. The Education Center section has basic information about the cryosphere, frozen ground, snow, and related topics. Part of the Cooperative Institute for Research in Environmental Sciences, University of Colorado at Boulder.

Tangled Web Of The Insect, Plant And Parasite Arms Race
New insights have been made into the evolutionary relationship between plant-dwelling insects and their parasites. Researchers shed light on how sawflies evolved to escape their parasites and gain themselves an 'enemy-free space'for millions of years.

EchoStar DVRs Hit a Roadblock
TiVo sues in court, successfully, to force EchoStar Communications to stop selling digital video recorders that TiVo says infringed on one of its patents.

In-home Sensors Spot Dementia Signs In Elderly
An Oregon Health &Science University study shows motion and door sensors placed in elders' homes can help track activity patterns thought to relate to memory changes that are early signs of dementia. The study results, presented at the 10th International Conference on Alzheimer's Disease and Related Disorders, show that continuous, unobtrusive monitoring of in-home activity may be a reliable way of assessing changes in motor behaviors that may occur along with changes in memory.

Neural Activity Connected To Blood Flow In New Brain Stimulation Techn
Neuroscientists have for the first time measured the electrical activity of nerve cells and correlated it to changes in blood flow in response to transcranial magnetic stimulation (TMS), a noninvasive method to stimulate neurons in the brain. Their findings, reported in Science, could substantially improve the effectiveness of brain stimulation as a therapeutic and research tool.




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