While the number of cardinals was small from the times of the Roman Empire to the Renaissance, and frequently smaller than the number of recognized churches entitled to a cardinal priest, in the 16th century the College expanded markedly. In 1587, Pope Sixtus V sought to arrest this growth by fixing the maximum size of the College at 70, including 50 cardinal priests, about twice the historical number. This limit was respected until 1958, and the list of titular churches modified only on rare occasions, generally when a building fell into disrepair. When Pope John XXIII abolished the limit, he began to add new churches to the list, which Popes Paul VI and John Paul II continued to do. Today there are close to 150 titular churches, out of over 300 churches in Rome.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): What happened to the College of the Cardinals in the 3rd century?
Ah, so.. unanswerable

Light is the signal by which plants synchronize their internal clocks to their environment and is sensed by a wide variety of photoreceptors. Red and blue light are absorbed through several phytochromes and cryptochromes. One phytochrome, phyA, is the main phytochrome in seedlings grown in the dark but rapidly degrades in light to produce Cry1. Phytochromes BE are more stable with phyB, the main phytochrome in seedlings grown in the light. The cryptochrome (cry) gene is also a light-sensitive component of the circadian clock and is thought to be involved both as a photoreceptor and as part of the clock's endogenous pacemaker mechanism. Cryptochromes 12 (involved in blueUVA) help to maintain the period length in the clock through a whole range of light conditions.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): What do plants use to sense light?
Ah, so.. photoreceptors

Pakistan: The Olympic torch reached Islamabad for the first time ever on April 16. President Pervez Musharraf and Prime Minister Yousaf Raza Gillani spoke at the opening ceremony of the relay. Security was high, for what one newspaper called the "most sensitive leg" of the torch's Olympic journey. The relay was initially supposed to carry the torch around Islamabad, but the entire relay was cancelled due to security concerns regarding "militant threats or anti-China protests", and replaced by an indoors ceremony with the torch carried around the track of Jinnah Stadium. In fear of violent protests and bomb attacks, the torch relay in Pakistan took place in a stadium behind closed doors. Although the relay was behind closed doors, thousands of policemen and soldiers guarded the flame. As a consequence, no incidents arose.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): Where did the Olympic torch relay start in Pakistan?
Ah, so..
Islamabad