4	6	It	it	PRP
6	8	’s	'	VBZ
9	12	not	not	RB
13	20	another	another	DT
21	24	ice	ice	NN
25	28	age	age	NN
28	29	,	,	,
30	33	but	but	CC
34	36	at	at	IN
37	42	least	least	JJS
43	45	it	it	PRP
45	47	’s	'	VBZ
48	54	cooler	cool	JJR

63	65	As	as	IN
66	75	countries	country	NNS
76	80	gear	gear	VBP
81	83	up	up	RP
84	87	for	for	IN
88	95	battles	battle	NNS
96	100	over	over	IN
101	110	ratifying	ratify	VBG
111	114	the	the	DT
115	119	1997	1997	CD
120	125	Kyoto	Kyoto	NNP
127	135	Protocol	Protocol	NNP
135	136	,	,	,
137	138	a	a	DT
139	145	recent	recent	JJ
146	151	study	study	NN
152	160	suggests	suggest	VBZ
161	165	that	that	IN
166	169	the	the	DT
170	175	world	world	NN
176	183	already	already	RB
184	187	has	have	VBZ
189	196	stepped	step	VBN
197	202	along	along	IN
203	206	the	the	DT
207	211	path	path	NN
212	214	to	to	TO
215	216	a	a	DT
217	223	future	future	JJ
224	230	cooler	cooler	NN
231	235	than	than	IN
236	238	it	it	PRP
239	244	might	might	MD
245	249	have	have	VB
251	255	been	be	VBN
255	256	.	.	.

260	271	Researchers	researcher	NNS
272	274	at	at	IN
275	279	NASA	NASA	NNP
279	281	’s	's	POS
282	289	Goddard	Goddard	NNP
290	299	Institute	Institute	NNP
300	303	for	for	IN
304	309	Space	Space	NNP
310	317	Studies	Studies	NNPS
318	319	(	(	(
319	323	GISS	GISS	NNP
323	324	)	)	)
326	328	in	in	IN
329	332	New	New	NNP
333	337	York	York	NNP
338	344	report	report	NN
345	349	that	that	IN
350	359	declining	decline	VBG
360	374	greenhouse-gas	greenhouse-gas	JJ
375	384	emissions	emission	NNS
385	390	since	since	IN
392	395	the	the	DT
396	400	late	late	JJ
401	406	1980s	1980	NNS
407	411	have	have	VBP
412	418	slowed	slow	VBN
419	422	the	the	DT
423	429	growth	growth	NN
430	434	rate	rate	NN
435	437	of	of	IN
438	441	the	the	DT
442	452	atmosphere	atmosphere	NN
452	454	’s	's	POS
456	463	ability	ability	NN
464	466	to	to	TO
467	473	retain	retain	VB
474	478	heat	heat	NN
478	479	.	.	.

483	486	The	the	DT
487	498	researchers	researcher	NNS
499	503	link	link	VBP
504	507	the	the	DT
508	514	slower	slow	JJR
515	519	rate	rate	NN
520	522	to	to	TO
523	537	implementation	implementation	NN
538	540	of	of	IN
541	544	the	the	DT
546	550	1987	1987	CD
551	559	Montreal	Montreal	NNP
560	568	Protocol	Protocol	NNP
568	569	,	,	,
570	572	in	in	IN
573	578	which	which	WDT
579	588	countries	country	NNS
589	595	agreed	agree	VBD
596	598	to	to	TO
599	604	phase	phase	VB
605	608	out	out	RP
610	620	production	production	NN
621	623	of	of	IN
624	629	gases	gas	NNS
630	634	that	that	WDT
635	640	erode	erode	VBP
641	644	the	the	DT
645	650	Earth	Earth	NNP
650	652	’s	's	POS
653	663	protective	protective	JJ
664	669	ozone	ozone	NN
671	676	layer	layer	NN
676	677	.	.	.

678	683	Known	know	VBN
684	696	collectively	collectively	RB
697	699	as	as	IN
700	719	chlorofluorocarbons	chlorofluorocarbon	NNS
719	720	,	,	,
721	726	these	these	DT
727	732	gases	gas	NNS
734	738	also	also	RB
739	743	trap	trap	VBP
744	748	heat	heat	NN
749	758	thousands	thousand	NNS
759	761	of	of	IN
762	767	times	time	NNS
768	770	as	as	RB
771	782	effectively	effectively	RB
783	785	as	as	IN
786	792	carbon	carbon	NN
794	801	dioxide	dioxide	NN
802	803	-	-	HYPH
804	807	the	the	DT
808	812	main	main	JJ
813	818	focus	focus	NN
819	821	of	of	IN
822	827	Kyoto	Kyoto	NNP
827	828	.	.	.

832	834	If	if	IN
835	838	the	the	DT
839	843	rate	rate	NN
844	846	of	of	IN
847	855	increase	increase	NN
856	858	in	in	IN
859	869	greenhouse	greenhouse	NN
870	875	gases	gas	NNS
876	879	had	have	VBD
880	884	been	be	VBN
885	895	maintained	maintain	VBN
897	899	at	at	IN
900	903	the	the	DT
904	908	peak	peak	NN
909	916	reached	reach	VBN
917	919	in	in	IN
920	924	1980	1980	CD
924	925	,	,	,
926	929	the	the	DT
930	937	climate	climate	NN
938	940	by	by	IN
941	945	2050	2050	CD
946	951	would	would	MD
952	956	have	have	VB
958	965	reached	reach	VBN
966	978	temperatures	temperature	NNS
979	982	not	not	RB
983	992	currently	currently	RB
993	1004	anticipated	anticipate	VBN
1005	1010	until	until	IN
1011	1015	2100	2100	CD
1015	1016	,	,	,
1017	1021	when	when	WRB
1023	1025	CO	CO	NNP
1026	1027	2	2	CD
1028	1042	concentrations	concentration	NNS
1043	1045	in	in	IN
1046	1049	the	the	DT
1050	1060	atmosphere	atmosphere	NN
1061	1064	are	be	VBP
1065	1073	expected	expect	VBN
1074	1076	to	to	TO
1077	1081	have	have	VB
1083	1090	doubled	double	VBN
1090	1091	,	,	,
1092	1095	the	the	DT
1096	1107	researchers	researcher	NNS
1108	1117	calculate	calculate	VBP
1117	1118	.	.	.

1122	1125	The	the	DT
1126	1134	slowdown	slowdown	NN
1135	1139	also	also	RB
1140	1141	“	``	``
1141	1143	is	be	VBZ
1144	1147	due	due	JJ
1148	1150	in	in	IN
1151	1155	part	part	NN
1156	1158	to	to	TO
1159	1162	the	the	DT
1163	1169	slower	slow	JJR
1170	1176	growth	growth	NN
1177	1179	of	of	IN
1181	1188	methane	methane	NN
1189	1192	and	and	CC
1193	1199	carbon	carbon	NN
1200	1207	dioxide	dioxide	NN
1207	1208	,	,	,
1209	1212	for	for	IN
1213	1220	reasons	reason	NNS
1221	1225	that	that	WDT
1226	1229	are	be	VBP
1229	1232	n’t	n't	RB
1233	1237	well	well	RB
1239	1249	understood	understand	VBN
1250	1253	and	and	CC
1254	1258	need	need	VB
1259	1263	more	more	JJR
1264	1269	study	study	NN
1269	1270	,	,	,
1270	1271	”	''	''
1272	1277	notes	note	VBZ
1278	1283	James	James	NNP
1284	1290	Hansen	Hansen	NNP
1290	1291	,	,	,
1292	1295	the	the	DT
1296	1300	NASA	NASA	NNP
1302	1312	researcher	researcher	NN
1313	1316	who	who	WP
1317	1326	conducted	conduct	VBD
1327	1330	the	the	DT
1331	1336	study	study	NN
1337	1341	with	with	IN
1342	1348	Makiko	Makiko	NNP
1349	1353	Sato	Sato	NNP
1353	1354	,	,	,
1355	1359	also	also	RB
1360	1364	with	with	IN
1366	1369	the	the	DT
1370	1374	GISS	giss	NN
1374	1375	.	.	.

1376	1379	The	the	DT
1380	1386	slower	slow	JJR
1387	1393	growth	growth	NN
1394	1396	in	in	IN
1397	1411	carbon-dioxide	carbon-dioxide	NN
1412	1426	concentrations	concentration	NNS
1428	1433	could	could	MD
1434	1436	be	be	VB
1437	1440	due	due	JJ
1441	1443	to	to	TO
1444	1453	increased	increase	VBN
1454	1456	CO	CO	NNP
1457	1458	2	2	CD
1459	1465	uptake	uptake	NN
1466	1468	by	by	IN
1469	1479	land-based	land-based	JJ
1480	1486	plants	plant	NNS
1487	1490	and	and	CC
1492	1498	marine	marine	JJ
1499	1508	organisms	organism	NNS
1508	1509	,	,	,
1510	1512	he	he	PRP
1513	1521	suggests	suggest	VBZ
1521	1522	.	.	.

1526	1529	The	the	DT
1530	1534	work	work	NN
1535	1540	grows	grow	VBZ
1541	1544	out	out	IN
1545	1547	of	of	IN
1548	1549	a	a	DT
1550	1561	longer-term	longer-term	JJ
1562	1568	effort	effort	NN
1569	1571	by	by	IN
1572	1575	the	the	DT
1576	1579	two	two	CD
1580	1590	scientists	scientist	NNS
1592	1594	to	to	TO
1595	1602	explore	explore	VB
1603	1608	paths	path	NNS
1609	1611	to	to	TO
1612	1621	adjusting	adjust	VBG
1622	1625	the	the	DT
1626	1631	globe	globe	NN
1631	1633	’s	's	POS
1634	1644	thermostat	thermostat	NN
1645	1650	other	other	JJ
1651	1655	than	than	IN
1657	1660	the	the	DT
1661	1672	politically	politically	RB
1673	1680	charged	charge	VBN
1681	1687	effort	effort	NN
1688	1696	embodied	embody	VBN
1697	1699	in	in	IN
1700	1703	the	the	DT
1704	1709	Kyoto	Kyoto	NNP
1710	1718	Protocol	Protocol	NNP
1718	1719	.	.	.

1721	1723	By	by	IN
1724	1732	focusing	focus	VBG
1733	1735	on	on	IN
1736	1742	carbon	carbon	NN
1743	1750	dioxide	dioxide	NN
1750	1751	,	,	,
1752	1755	the	the	DT
1756	1760	pact	pact	NN
1761	1765	sets	set	VBZ
1766	1769	its	its	PRP$
1770	1776	sights	sight	NNS
1777	1779	on	on	IN
1781	1788	curbing	curb	VBG
1789	1792	the	the	DT
1793	1803	greenhouse	greenhouse	NN
1804	1807	gas	gas	NN
1808	1812	held	hold	VBD
1813	1817	most	most	RBS
1818	1829	responsible	responsible	JJ
1830	1833	for	for	IN
1835	1847	contributing	contribute	VBG
1848	1850	to	to	TO
1851	1854	the	the	DT
1855	1862	climate	climate	NN
1862	1864	’s	's	POS
1865	1872	warming	warming	NN
1873	1879	during	during	IN
1880	1883	the	the	DT
1884	1888	past	past	JJ
1889	1896	century	century	NN
1896	1897	.	.	.

1899	1902	But	but	CC
1903	1908	curbs	curb	NNS
1909	1911	on	on	IN
1912	1914	CO	CO	NNP
1915	1916	2	2	CD
1917	1921	mean	mean	NN
1922	1927	curbs	curb	NNS
1928	1930	on	on	IN
1931	1938	burning	burn	VBG
1939	1943	coal	coal	NN
1943	1944	,	,	,
1945	1948	oil	oil	NN
1948	1949	,	,	,
1950	1953	and	and	CC
1954	1961	natural	natural	JJ
1963	1966	gas	gas	NN
1967	1968	-	-	HYPH
1969	1972	the	the	DT
1973	1978	fuels	fuel	NNS
1979	1981	of	of	IN
1982	1989	booming	boom	VBG
1990	1999	economies	economy	NNS
1999	2000	.	.	.

2004	2008	Drs.	Drs.	NNP
2009	2015	Hansen	Hansen	NNP
2016	2019	and	and	CC
2020	2024	Sato	Sato	NNP
2025	2030	argue	argue	VBP
2031	2035	that	that	IN
2036	2048	policymakers	policymaker	NNS
2049	2052	can	can	MD
2053	2057	make	make	VB
2059	2070	significant	significant	JJ
2071	2078	headway	headway	NN
2079	2081	by	by	IN
2082	2091	attacking	attack	VBG
2092	2097	other	other	JJ
2098	2108	pollutants	pollutant	NNS
2109	2113	such	such	JJ
2114	2116	as	as	IN
2117	2122	black	black	JJ
2124	2130	carbon	carbon	NN
2131	2135	soot	soot	NN
2135	2136	,	,	,
2137	2142	ozone	ozone	NN
2143	2144	(	(	(
2144	2148	smog	smog	NN
2148	2149	)	)	)
2150	2152	in	in	IN
2153	2156	the	the	DT
2157	2162	lower	low	JJR
2163	2173	atmosphere	atmosphere	NN
2173	2174	,	,	,
2175	2178	and	and	CC
2179	2186	methane	methane	NN
2188	2192	from	from	IN
2193	2202	landfills	landfill	NNS
2202	2203	,	,	,
2204	2210	mining	mining	NN
2210	2211	,	,	,
2212	2215	and	and	CC
2216	2219	oil	oil	NN
2220	2223	and	and	CC
2224	2227	gas	gas	NN
2228	2238	production	production	NN
2238	2239	.	.	.

2240	2243	The	the	DT
2244	2247	duo	duo	NN
2249	2259	calculates	calculate	VBZ
2260	2264	that	that	IN
2265	2267	by	by	IN
2268	2276	reducing	reduce	VBG
2277	2284	methane	methane	NN
2285	2294	emissions	emission	NNS
2295	2297	by	by	IN
2298	2300	30	30	CD
2301	2308	percent	percent	NN
2308	2309	,	,	,
2310	2313	for	for	IN
2315	2322	example	example	NN
2322	2323	,	,	,
2324	2327	the	the	DT
2328	2334	effect	effect	NN
2335	2337	on	on	IN
2338	2345	climate	climate	NN
2346	2351	would	would	MD
2352	2354	be	be	VB
2355	2365	comparable	comparable	JJ
2366	2368	to	to	TO
2369	2372	the	the	DT
2373	2379	effect	effect	NN
2381	2385	from	from	IN
2386	2390	cuts	cut	NNS
2391	2393	in	in	IN
2394	2396	CO	CO	NNP
2397	2398	2	2	CD
2399	2409	envisioned	envision	VBN
2410	2412	by	by	IN
2413	2416	the	the	DT
2417	2422	Kyoto	Kyoto	NNP
2423	2431	Protocol	Protocol	NNP
2432	2438	during	during	IN
2439	2442	its	its	PRP$
2444	2449	first	first	JJ
2450	2460	commitment	commitment	NN
2461	2467	period	period	NN
2467	2468	,	,	,
2469	2474	which	which	WDT
2475	2479	runs	run	VBZ
2480	2484	from	from	IN
2485	2489	2008	2008	CD
2490	2492	to	to	TO
2493	2497	2012	2012	CD
2497	2498	.	.	.

2499	2504	Their	their	PRP$
2506	2511	study	study	NN
2512	2520	appeared	appear	VBD
2521	2523	in	in	IN
2524	2527	the	the	DT
2528	2532	Dec.	Dec.	NNP
2533	2535	18	18	CD
2535	2536	,	,	,
2537	2541	2001	2001	CD
2541	2542	,	,	,
2543	2548	issue	issue	NN
2549	2551	of	of	IN
2552	2555	the	the	DT
2556	2567	Proceedings	Proceeding	NNP
2568	2570	of	of	IN
2572	2575	the	the	DT
2576	2584	National	National	NNP
2585	2592	Academy	Academy	NNP
2593	2595	of	of	IN
2596	2603	Science	Science	NNP
2603	2604	.	.	.

2609	2613	back	back	RB
2614	2616	to	to	TO
2617	2620	top	top	VB

2625	2633	Untitled	untitle	VBN

2636	2645	Copyright	copyright	NN
2646	2647	@	@	NN
2648	2652	2002	2002	:
2653	2656	The	the	DT
2657	2666	Christian	Christian	NNP
2667	2674	Science	Science	NNP
2675	2682	Monitor	Monitor	NNP
2682	2683	.	.	.

2684	2687	All	all	DT
2688	2694	rights	right	NNS
2696	2704	reserved	reserve	VBN
2704	2705	.	.	.